diff --git a/.generator/schemas/v2/openapi.yaml b/.generator/schemas/v2/openapi.yaml
index a484bec1a76..22aa66aee70 100644
--- a/.generator/schemas/v2/openapi.yaml
+++ b/.generator/schemas/v2/openapi.yaml
@@ -264,6 +264,22 @@ components:
       required: true
       schema:
         type: string
+    ChangeRequestDecisionIDPathParameter:
+      description: The identifier of the change request decision.
+      example: decision-id-0
+      in: path
+      name: decision_id
+      required: true
+      schema:
+        type: string
+    ChangeRequestIDPathParameter:
+      description: The identifier of the change request.
+      example: CHM-1234
+      in: path
+      name: change_request_id
+      required: true
+      schema:
+        type: string
     CloudAccountID:
       description: Cloud Account id.
       in: path
@@ -10567,6 +10583,626 @@ components:
       required:
       - changeEventTrigger
       type: object
+    ChangeRequestBranchCreateAttributes:
+      description: Attributes for creating a change request branch.
+      properties:
+        branch_name:
+          description: The name of the branch to create.
+          example: chm/CHM-1234
+          type: string
+        repo_id:
+          description: The repository identifier in the format owner/repository.
+          example: DataDog/dd-source
+          type: string
+      required:
+      - repo_id
+      - branch_name
+      type: object
+    ChangeRequestBranchCreateData:
+      description: Data object to create a change request branch.
+      properties:
+        attributes:
+          $ref: '#/components/schemas/ChangeRequestBranchCreateAttributes'
+        type:
+          $ref: '#/components/schemas/ChangeRequestBranchResourceType'
+      required:
+      - type
+      - attributes
+      type: object
+    ChangeRequestBranchCreateRequest:
+      description: Request object to create a branch for a change request.
+      properties:
+        data:
+          $ref: '#/components/schemas/ChangeRequestBranchCreateData'
+      required:
+      - data
+      type: object
+    ChangeRequestBranchResourceType:
+      description: Change request branch resource type.
+      enum:
+      - change_request_branch
+      example: change_request_branch
+      type: string
+      x-enum-varnames:
+      - CHANGE_REQUEST_BRANCH
+    ChangeRequestChangeType:
+      description: The type of the change request.
+      enum:
+      - NORMAL
+      - STANDARD
+      - EMERGENCY
+      example: NORMAL
+      type: string
+      x-enum-varnames:
+      - NORMAL
+      - STANDARD
+      - EMERGENCY
+    ChangeRequestCreateAttributes:
+      description: Attributes for creating a change request.
+      properties:
+        change_request_linked_incident_uuid:
+          description: The UUID of an incident to link to the change request.
+          example: 00000000-0000-0000-0000-000000000000
+          type: string
+        change_request_maintenance_window_query:
+          description: The maintenance window query for the change request.
+          example: ''
+          type: string
+        change_request_plan:
+          description: The plan associated with the change request.
+          example: 1. Deploy to staging 2. Run tests 3. Deploy to production
+          type: string
+        change_request_risk:
+          $ref: '#/components/schemas/ChangeRequestRiskLevel'
+        change_request_type:
+          $ref: '#/components/schemas/ChangeRequestChangeType'
+        description:
+          description: The description of the change request.
+          example: Deploying new payment service v2.1
+          type: string
+        end_date:
+          description: The planned end date of the change request.
+          example: '2024-01-02T15:00:00Z'
+          format: date-time
+          type: string
+        project_id:
+          description: The project UUID to associate with the change request.
+          example: d4bbe1af-f36e-42f1-87c1-493ca35c320e
+          type: string
+        requested_teams:
+          description: A list of team handles to request decisions from.
+          example:
+          - team-handle-1
+          items:
+            type: string
+          type: array
+        start_date:
+          description: The planned start date of the change request.
+          example: '2024-01-01T03:00:00Z'
+          format: date-time
+          type: string
+        title:
+          description: The title of the change request.
+          example: Deploy new payment service
+          type: string
+      required:
+      - title
+      type: object
+    ChangeRequestCreateData:
+      description: Data object to create a change request.
+      properties:
+        attributes:
+          $ref: '#/components/schemas/ChangeRequestCreateAttributes'
+        type:
+          $ref: '#/components/schemas/ChangeRequestResourceType'
+      required:
+      - type
+      - attributes
+      type: object
+    ChangeRequestCreateRequest:
+      description: Request object to create a change request.
+      properties:
+        data:
+          $ref: '#/components/schemas/ChangeRequestCreateData'
+      required:
+      - data
+      type: object
+    ChangeRequestDecisionCreateAttributes:
+      description: Attributes for creating a change request decision.
+      properties:
+        change_request_status:
+          $ref: '#/components/schemas/ChangeRequestDecisionStatusType'
+        request_reason:
+          description: The reason for requesting the decision.
+          example: Please review and approve this change
+          type: string
+      type: object
+    ChangeRequestDecisionCreateItem:
+      description: An included change request decision for a create or update operation.
+      properties:
+        attributes:
+          $ref: '#/components/schemas/ChangeRequestDecisionCreateAttributes'
+        id:
+          description: The decision identifier.
+          example: decision-id-0
+          type: string
+        relationships:
+          $ref: '#/components/schemas/ChangeRequestDecisionCreateRelationships'
+        type:
+          $ref: '#/components/schemas/ChangeRequestDecisionResourceType'
+      required:
+      - type
+      - id
+      type: object
+    ChangeRequestDecisionCreateRelationships:
+      description: Relationships for creating a change request decision.
+      properties:
+        requested_user:
+          $ref: '#/components/schemas/ChangeRequestUserRelationship'
+      type: object
+    ChangeRequestDecisionRelationshipData:
+      description: Change request decision relationship data.
+      properties:
+        id:
+          description: The decision UUID.
+          example: decision-id-0
+          type: string
+        type:
+          $ref: '#/components/schemas/ChangeRequestDecisionResourceType'
+      required:
+      - id
+      - type
+      type: object
+    ChangeRequestDecisionRelationships:
+      description: Relationships of a change request decision.
+      properties:
+        modified_by:
+          $ref: '#/components/schemas/ChangeRequestUserRelationship'
+        requested_by_user:
+          $ref: '#/components/schemas/ChangeRequestUserRelationship'
+        requested_user:
+          $ref: '#/components/schemas/ChangeRequestUserRelationship'
+      required:
+      - requested_user
+      - requested_by_user
+      - modified_by
+      type: object
+    ChangeRequestDecisionResourceType:
+      description: Change request decision resource type.
+      enum:
+      - change_request_decision
+      example: change_request_decision
+      type: string
+      x-enum-varnames:
+      - CHANGE_REQUEST_DECISION
+    ChangeRequestDecisionResponseAttributes:
+      description: Attributes of a change request decision in a response.
+      properties:
+        change_request_status:
+          $ref: '#/components/schemas/ChangeRequestDecisionStatusType'
+        decided_at:
+          description: Timestamp of when the decision was made.
+          example: '2024-01-02T00:00:00Z'
+          format: date-time
+          type: string
+        decision_reason:
+          description: The reason for the decision.
+          example: LGTM
+          type: string
+        deleted_at:
+          description: Timestamp of when the decision was deleted.
+          example: '0001-01-01T00:00:00Z'
+          format: date-time
+          type: string
+        request_reason:
+          description: The reason for requesting the decision.
+          example: Please review this change
+          type: string
+        requested_at:
+          description: Timestamp of when the decision was requested.
+          example: '2024-01-01T00:00:00Z'
+          format: date-time
+          type: string
+      required:
+      - change_request_status
+      - request_reason
+      - decision_reason
+      - requested_at
+      - decided_at
+      - deleted_at
+      type: object
+    ChangeRequestDecisionStatusType:
+      description: The status of a change request decision.
+      enum:
+      - REQUESTED
+      - APPROVED
+      - DECLINED
+      example: REQUESTED
+      type: string
+      x-enum-varnames:
+      - REQUESTED
+      - APPROVED
+      - DECLINED
+    ChangeRequestDecisionUpdateData:
+      description: Data object to update a change request decision.
+      properties:
+        attributes:
+          $ref: '#/components/schemas/ChangeRequestDecisionUpdateDataAttributes'
+        relationships:
+          $ref: '#/components/schemas/ChangeRequestDecisionUpdateDataRelationships'
+        type:
+          $ref: '#/components/schemas/ChangeRequestResourceType'
+      required:
+      - type
+      type: object
+    ChangeRequestDecisionUpdateDataAttributes:
+      description: Attributes of the parent change request for a decision update.
+      properties:
+        id:
+          description: The identifier of the change request.
+          example: CHM-1234
+          type: string
+      type: object
+    ChangeRequestDecisionUpdateDataRelationships:
+      description: Relationships for updating a change request decision.
+      properties:
+        change_request_decisions:
+          $ref: '#/components/schemas/ChangeRequestDecisionsRelationship'
+      required:
+      - change_request_decisions
+      type: object
+    ChangeRequestDecisionUpdateRequest:
+      description: Request object to update a change request decision.
+      properties:
+        data:
+          $ref: '#/components/schemas/ChangeRequestDecisionUpdateData'
+        included:
+          $ref: '#/components/schemas/ChangeRequestUpdateIncluded'
+      required:
+      - data
+      type: object
+    ChangeRequestDecisionsRelationship:
+      description: Relationship to change request decisions.
+      properties:
+        data:
+          description: Array of decision relationship data.
+          items:
+            $ref: '#/components/schemas/ChangeRequestDecisionRelationshipData'
+          type: array
+      required:
+      - data
+      type: object
+    ChangeRequestIncluded:
+      description: Included resources related to the change request.
+      items:
+        $ref: '#/components/schemas/ChangeRequestIncludedItem'
+      type: array
+    ChangeRequestIncludedDecision:
+      description: An included change request decision resource.
+      properties:
+        attributes:
+          $ref: '#/components/schemas/ChangeRequestDecisionResponseAttributes'
+        id:
+          description: The decision UUID.
+          example: decision-id-0
+          type: string
+        relationships:
+          $ref: '#/components/schemas/ChangeRequestDecisionRelationships'
+        type:
+          $ref: '#/components/schemas/ChangeRequestDecisionResourceType'
+      required:
+      - type
+      - id
+      - attributes
+      type: object
+    ChangeRequestIncludedItem:
+      description: An included resource item in the change request response.
+      oneOf:
+      - $ref: '#/components/schemas/ChangeRequestIncludedUser'
+      - $ref: '#/components/schemas/ChangeRequestIncludedDecision'
+    ChangeRequestIncludedUser:
+      description: An included user resource.
+      properties:
+        attributes:
+          $ref: '#/components/schemas/ChangeRequestIncludedUserAttributes'
+        id:
+          description: The user UUID.
+          example: 00000000-0000-0000-0000-000000000000
+          type: string
+        type:
+          description: The resource type.
+          example: user
+          type: string
+      required:
+      - type
+      - id
+      - attributes
+      type: object
+    ChangeRequestIncludedUserAttributes:
+      description: Attributes of an included user.
+      properties:
+        email:
+          description: The email of the user.
+          example: john.doe@example.com
+          type: string
+        handle:
+          description: The handle of the user.
+          example: john.doe@example.com
+          type: string
+        name:
+          description: The name of the user.
+          example: John Doe
+          type: string
+      required:
+      - name
+      - email
+      - handle
+      type: object
+    ChangeRequestObjectAttributes:
+      additionalProperties:
+        items:
+          type: string
+        type: array
+      description: Custom attributes of the change request as key-value pairs.
+      type: object
+    ChangeRequestRelationships:
+      description: Relationships of a change request.
+      properties:
+        change_request_decisions:
+          $ref: '#/components/schemas/ChangeRequestDecisionsRelationship'
+        created_by:
+          $ref: '#/components/schemas/ChangeRequestUserRelationship'
+        modified_by:
+          $ref: '#/components/schemas/ChangeRequestUserRelationship'
+      required:
+      - created_by
+      - modified_by
+      - change_request_decisions
+      type: object
+    ChangeRequestResourceType:
+      description: Change request resource type.
+      enum:
+      - change_request
+      example: change_request
+      type: string
+      x-enum-varnames:
+      - CHANGE_REQUEST
+    ChangeRequestResponse:
+      description: Response object for a change request.
+      properties:
+        data:
+          $ref: '#/components/schemas/ChangeRequestResponseData'
+        included:
+          $ref: '#/components/schemas/ChangeRequestIncluded'
+      required:
+      - data
+      type: object
+    ChangeRequestResponseAttributes:
+      description: Attributes of a change request response.
+      properties:
+        archived_at:
+          description: Timestamp of when the change request was archived.
+          format: date-time
+          nullable: true
+          readOnly: true
+          type: string
+        attributes:
+          $ref: '#/components/schemas/ChangeRequestObjectAttributes'
+        change_request_linked_incident_uuid:
+          description: The UUID of the linked incident.
+          example: ''
+          type: string
+        change_request_maintenance_window_query:
+          description: The maintenance window query for the change request.
+          example: ''
+          type: string
+        change_request_plan:
+          description: The plan associated with the change request.
+          example: ''
+          type: string
+        change_request_risk:
+          $ref: '#/components/schemas/ChangeRequestRiskLevel'
+        change_request_type:
+          $ref: '#/components/schemas/ChangeRequestChangeType'
+        closed_at:
+          description: Timestamp of when the change request was closed.
+          format: date-time
+          nullable: true
+          readOnly: true
+          type: string
+        created_at:
+          description: Timestamp of when the change request was created.
+          example: '2024-01-01T00:00:00Z'
+          format: date-time
+          readOnly: true
+          type: string
+        creation_source:
+          description: The source from which the change request was created.
+          example: CS_MANUAL
+          type: string
+        description:
+          description: The description of the change request.
+          example: Deploying new payment service v2.1
+          type: string
+        end_date:
+          description: The planned end date of the change request.
+          example: '2024-01-02T15:00:00Z'
+          format: date-time
+          type: string
+        key:
+          description: The human-readable key of the change request.
+          example: CHM-1234
+          type: string
+        modified_at:
+          description: Timestamp of when the change request was last modified.
+          example: '2024-01-01T00:00:00Z'
+          format: date-time
+          readOnly: true
+          type: string
+        plan_notebook_id:
+          description: The notebook ID associated with the change request plan.
+          example: 0
+          format: int64
+          type: integer
+        priority:
+          description: The priority of the change request.
+          example: NOT_DEFINED
+          type: string
+        project_id:
+          description: The project UUID associated with the change request.
+          example: d4bbe1af-f36e-42f1-87c1-493ca35c320e
+          type: string
+        start_date:
+          description: The planned start date of the change request.
+          example: '2024-01-01T03:00:00Z'
+          format: date-time
+          type: string
+        status:
+          description: The current status of the change request.
+          example: OPEN
+          type: string
+        title:
+          description: The title of the change request.
+          example: Deploy new payment service
+          type: string
+        type:
+          description: The case type.
+          example: CHANGE_REQUEST
+          type: string
+      required:
+      - key
+      - title
+      - type
+      - priority
+      - status
+      - description
+      - creation_source
+      - plan_notebook_id
+      - project_id
+      - attributes
+      - created_at
+      - modified_at
+      - change_request_type
+      - change_request_risk
+      - change_request_plan
+      - change_request_linked_incident_uuid
+      - change_request_maintenance_window_query
+      type: object
+    ChangeRequestResponseData:
+      description: Data object for a change request response.
+      properties:
+        attributes:
+          $ref: '#/components/schemas/ChangeRequestResponseAttributes'
+        id:
+          description: The identifier of the change request.
+          example: CHM-1234
+          type: string
+        relationships:
+          $ref: '#/components/schemas/ChangeRequestRelationships'
+        type:
+          $ref: '#/components/schemas/ChangeRequestResourceType'
+      required:
+      - id
+      - type
+      - attributes
+      type: object
+    ChangeRequestRiskLevel:
+      description: The risk level of the change request.
+      enum:
+      - UNDEFINED
+      - LOW
+      - MEDIUM
+      - HIGH
+      example: LOW
+      type: string
+      x-enum-varnames:
+      - UNDEFINED
+      - LOW
+      - MEDIUM
+      - HIGH
+    ChangeRequestUpdateAttributes:
+      description: Attributes for updating a change request.
+      properties:
+        change_request_plan:
+          description: The plan associated with the change request.
+          example: Updated deployment plan
+          type: string
+        change_request_risk:
+          $ref: '#/components/schemas/ChangeRequestRiskLevel'
+        change_request_type:
+          $ref: '#/components/schemas/ChangeRequestChangeType'
+        end_date:
+          description: The planned end date of the change request.
+          example: '2024-01-02T15:00:00Z'
+          format: date-time
+          type: string
+        id:
+          description: The identifier of the change request to update.
+          example: CHM-1234
+          type: string
+        start_date:
+          description: The planned start date of the change request.
+          example: '2024-01-01T03:00:00Z'
+          format: date-time
+          type: string
+      type: object
+    ChangeRequestUpdateData:
+      description: Data object to update a change request.
+      properties:
+        attributes:
+          $ref: '#/components/schemas/ChangeRequestUpdateAttributes'
+        relationships:
+          $ref: '#/components/schemas/ChangeRequestUpdateRelationships'
+        type:
+          $ref: '#/components/schemas/ChangeRequestResourceType'
+      required:
+      - type
+      type: object
+    ChangeRequestUpdateIncluded:
+      description: Included resources for the change request update.
+      items:
+        $ref: '#/components/schemas/ChangeRequestDecisionCreateItem'
+      type: array
+    ChangeRequestUpdateRelationships:
+      description: Relationships for updating a change request.
+      properties:
+        change_request_decisions:
+          $ref: '#/components/schemas/ChangeRequestDecisionsRelationship'
+      type: object
+    ChangeRequestUpdateRequest:
+      description: Request object to update a change request.
+      properties:
+        data:
+          $ref: '#/components/schemas/ChangeRequestUpdateData'
+        included:
+          $ref: '#/components/schemas/ChangeRequestUpdateIncluded'
+      required:
+      - data
+      type: object
+    ChangeRequestUserRelationship:
+      description: Relationship to a user.
+      properties:
+        data:
+          $ref: '#/components/schemas/ChangeRequestUserRelationshipData'
+      required:
+      - data
+      type: object
+    ChangeRequestUserRelationshipData:
+      description: User relationship data.
+      nullable: true
+      properties:
+        id:
+          description: The user UUID.
+          example: 00000000-0000-0000-0000-000000000000
+          type: string
+        type:
+          description: The user resource type.
+          example: user
+          type: string
+      required:
+      - id
+      - type
+      type: object
     ChargebackBreakdown:
       description: Charges breakdown.
       properties:
@@ -74763,6 +75399,267 @@ paths:
         limitParam: page[limit]
         pageOffsetParam: page[offset]
         resultsPath: data
+  /api/v2/change-management/change-request:
+    post:
+      description: Create a new change request.
+      operationId: CreateChangeRequest
+      requestBody:
+        content:
+          application/json:
+            schema:
+              $ref: '#/components/schemas/ChangeRequestCreateRequest'
+        description: Change request payload.
+        required: true
+      responses:
+        '201':
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/ChangeRequestResponse'
+          description: Created
+        '400':
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/JSONAPIErrorResponse'
+          description: Bad Request
+        '403':
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/JSONAPIErrorResponse'
+          description: Forbidden
+        '429':
+          $ref: '#/components/responses/TooManyRequestsResponse'
+      security:
+      - apiKeyAuth: []
+        appKeyAuth: []
+      - AuthZ:
+        - cases_write
+      summary: Create a change request
+      tags:
+      - Change Management
+      x-unstable: '**Note**: This endpoint is in preview and is subject to change.
+
+        If you have any feedback, contact [Datadog support](https://docs.datadoghq.com/help/).'
+  /api/v2/change-management/change-request/{change_request_id}:
+    get:
+      description: Get the details of a change request by its ID.
+      operationId: GetChangeRequest
+      parameters:
+      - $ref: '#/components/parameters/ChangeRequestIDPathParameter'
+      responses:
+        '200':
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/ChangeRequestResponse'
+          description: OK
+        '400':
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/JSONAPIErrorResponse'
+          description: Bad Request
+        '404':
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/JSONAPIErrorResponse'
+          description: Not Found
+        '429':
+          $ref: '#/components/responses/TooManyRequestsResponse'
+      security:
+      - apiKeyAuth: []
+        appKeyAuth: []
+      - AuthZ:
+        - cases_read
+      summary: Get a change request
+      tags:
+      - Change Management
+      x-unstable: '**Note**: This endpoint is in preview and is subject to change.
+
+        If you have any feedback, contact [Datadog support](https://docs.datadoghq.com/help/).'
+    patch:
+      description: Update the properties of a change request.
+      operationId: UpdateChangeRequest
+      parameters:
+      - $ref: '#/components/parameters/ChangeRequestIDPathParameter'
+      requestBody:
+        content:
+          application/json:
+            schema:
+              $ref: '#/components/schemas/ChangeRequestUpdateRequest'
+        description: Change request update payload.
+        required: true
+      responses:
+        '200':
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/ChangeRequestResponse'
+          description: OK
+        '400':
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/JSONAPIErrorResponse'
+          description: Bad Request
+        '403':
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/JSONAPIErrorResponse'
+          description: Forbidden
+        '404':
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/JSONAPIErrorResponse'
+          description: Not Found
+        '429':
+          $ref: '#/components/responses/TooManyRequestsResponse'
+      security:
+      - apiKeyAuth: []
+        appKeyAuth: []
+      - AuthZ:
+        - cases_write
+      summary: Update a change request
+      tags:
+      - Change Management
+      x-unstable: '**Note**: This endpoint is in preview and is subject to change.
+
+        If you have any feedback, contact [Datadog support](https://docs.datadoghq.com/help/).'
+  /api/v2/change-management/change-request/{change_request_id}/branch:
+    post:
+      description: Create a new branch in a repository for a change request.
+      operationId: CreateChangeRequestBranch
+      parameters:
+      - $ref: '#/components/parameters/ChangeRequestIDPathParameter'
+      requestBody:
+        content:
+          application/json:
+            schema:
+              $ref: '#/components/schemas/ChangeRequestBranchCreateRequest'
+        description: Branch creation payload.
+        required: true
+      responses:
+        '200':
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/ChangeRequestResponse'
+          description: OK
+        '400':
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/JSONAPIErrorResponse'
+          description: Bad Request
+        '404':
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/JSONAPIErrorResponse'
+          description: Not Found
+        '429':
+          $ref: '#/components/responses/TooManyRequestsResponse'
+      security:
+      - apiKeyAuth: []
+        appKeyAuth: []
+      - AuthZ:
+        - cases_write
+      summary: Create a change request branch
+      tags:
+      - Change Management
+      x-unstable: '**Note**: This endpoint is in preview and is subject to change.
+
+        If you have any feedback, contact [Datadog support](https://docs.datadoghq.com/help/).'
+  /api/v2/change-management/change-request/{change_request_id}/decisions/{decision_id}:
+    delete:
+      description: Delete a decision from a change request.
+      operationId: DeleteChangeRequestDecision
+      parameters:
+      - $ref: '#/components/parameters/ChangeRequestIDPathParameter'
+      - $ref: '#/components/parameters/ChangeRequestDecisionIDPathParameter'
+      responses:
+        '200':
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/ChangeRequestResponse'
+          description: OK
+        '400':
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/JSONAPIErrorResponse'
+          description: Bad Request
+        '404':
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/JSONAPIErrorResponse'
+          description: Not Found
+        '429':
+          $ref: '#/components/responses/TooManyRequestsResponse'
+      security:
+      - apiKeyAuth: []
+        appKeyAuth: []
+      - AuthZ:
+        - cases_write
+      summary: Delete a change request decision
+      tags:
+      - Change Management
+      x-unstable: '**Note**: This endpoint is in preview and is subject to change.
+
+        If you have any feedback, contact [Datadog support](https://docs.datadoghq.com/help/).'
+    patch:
+      description: Update a decision on a change request, such as approving or declining
+        it.
+      operationId: UpdateChangeRequestDecision
+      parameters:
+      - $ref: '#/components/parameters/ChangeRequestIDPathParameter'
+      - $ref: '#/components/parameters/ChangeRequestDecisionIDPathParameter'
+      requestBody:
+        content:
+          application/json:
+            schema:
+              $ref: '#/components/schemas/ChangeRequestDecisionUpdateRequest'
+        description: Decision update payload.
+        required: true
+      responses:
+        '200':
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/ChangeRequestResponse'
+          description: OK
+        '400':
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/JSONAPIErrorResponse'
+          description: Bad Request
+        '404':
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/JSONAPIErrorResponse'
+          description: Not Found
+        '429':
+          $ref: '#/components/responses/TooManyRequestsResponse'
+      security:
+      - apiKeyAuth: []
+        appKeyAuth: []
+      - AuthZ:
+        - cases_write
+      summary: Update a change request decision
+      tags:
+      - Change Management
+      x-unstable: '**Note**: This endpoint is in preview and is subject to change.
+
+        If you have any feedback, contact [Datadog support](https://docs.datadoghq.com/help/).'
   /api/v2/ci/pipeline:
     post:
       description: 'Send your pipeline event to your Datadog platform over HTTP. For
@@ -105183,6 +106080,10 @@ tags:
     Management page](https://docs.datadoghq.com/service_management/case_management/)
     for more information.
   name: Case Management Type
+- description: View and manage change requests within Change Management. See the [Case
+    Management page](https://docs.datadoghq.com/service_management/case_management/)
+    for more information.
+  name: Change Management
 - description: Configure AWS cloud authentication mappings for persona and intake
     authentication through the Datadog API.
   name: Cloud Authentication
diff --git a/examples/v2/change-management/CreateChangeRequest.rb b/examples/v2/change-management/CreateChangeRequest.rb
new file mode 100644
index 00000000000..6c4749344c6
--- /dev/null
+++ b/examples/v2/change-management/CreateChangeRequest.rb
@@ -0,0 +1,29 @@
+# Create a change request returns "Created" response
+
+require "datadog_api_client"
+DatadogAPIClient.configure do |config|
+  config.unstable_operations["v2.create_change_request".to_sym] = true
+end
+api_instance = DatadogAPIClient::V2::ChangeManagementAPI.new
+
+body = DatadogAPIClient::V2::ChangeRequestCreateRequest.new({
+  data: DatadogAPIClient::V2::ChangeRequestCreateData.new({
+    attributes: DatadogAPIClient::V2::ChangeRequestCreateAttributes.new({
+      change_request_linked_incident_uuid: "00000000-0000-0000-0000-000000000000",
+      change_request_maintenance_window_query: "",
+      change_request_plan: "1. Deploy to staging 2. Run tests 3. Deploy to production",
+      change_request_risk: DatadogAPIClient::V2::ChangeRequestRiskLevel::LOW,
+      change_request_type: DatadogAPIClient::V2::ChangeRequestChangeType::NORMAL,
+      description: "Deploying new payment service v2.1",
+      end_date: "2024-01-02T15:00:00Z",
+      project_id: "d4bbe1af-f36e-42f1-87c1-493ca35c320e",
+      requested_teams: [
+        "team-handle-1",
+      ],
+      start_date: "2024-01-01T03:00:00Z",
+      title: "Deploy new payment service",
+    }),
+    type: DatadogAPIClient::V2::ChangeRequestResourceType::CHANGE_REQUEST,
+  }),
+})
+p api_instance.create_change_request(body)
diff --git a/examples/v2/change-management/CreateChangeRequestBranch.rb b/examples/v2/change-management/CreateChangeRequestBranch.rb
new file mode 100644
index 00000000000..ed4f9b6e545
--- /dev/null
+++ b/examples/v2/change-management/CreateChangeRequestBranch.rb
@@ -0,0 +1,18 @@
+# Create a change request branch returns "OK" response
+
+require "datadog_api_client"
+DatadogAPIClient.configure do |config|
+  config.unstable_operations["v2.create_change_request_branch".to_sym] = true
+end
+api_instance = DatadogAPIClient::V2::ChangeManagementAPI.new
+
+body = DatadogAPIClient::V2::ChangeRequestBranchCreateRequest.new({
+  data: DatadogAPIClient::V2::ChangeRequestBranchCreateData.new({
+    attributes: DatadogAPIClient::V2::ChangeRequestBranchCreateAttributes.new({
+      branch_name: "chm/CHM-1234",
+      repo_id: "DataDog/dd-source",
+    }),
+    type: DatadogAPIClient::V2::ChangeRequestBranchResourceType::CHANGE_REQUEST_BRANCH,
+  }),
+})
+p api_instance.create_change_request_branch("change_request_id", body)
diff --git a/examples/v2/change-management/DeleteChangeRequestDecision.rb b/examples/v2/change-management/DeleteChangeRequestDecision.rb
new file mode 100644
index 00000000000..93607771b32
--- /dev/null
+++ b/examples/v2/change-management/DeleteChangeRequestDecision.rb
@@ -0,0 +1,8 @@
+# Delete a change request decision returns "OK" response
+
+require "datadog_api_client"
+DatadogAPIClient.configure do |config|
+  config.unstable_operations["v2.delete_change_request_decision".to_sym] = true
+end
+api_instance = DatadogAPIClient::V2::ChangeManagementAPI.new
+p api_instance.delete_change_request_decision("change_request_id", "decision_id")
diff --git a/examples/v2/change-management/GetChangeRequest.rb b/examples/v2/change-management/GetChangeRequest.rb
new file mode 100644
index 00000000000..e8cf968adc6
--- /dev/null
+++ b/examples/v2/change-management/GetChangeRequest.rb
@@ -0,0 +1,8 @@
+# Get a change request returns "OK" response
+
+require "datadog_api_client"
+DatadogAPIClient.configure do |config|
+  config.unstable_operations["v2.get_change_request".to_sym] = true
+end
+api_instance = DatadogAPIClient::V2::ChangeManagementAPI.new
+p api_instance.get_change_request("change_request_id")
diff --git a/examples/v2/change-management/UpdateChangeRequest.rb b/examples/v2/change-management/UpdateChangeRequest.rb
new file mode 100644
index 00000000000..66a6cd84ad6
--- /dev/null
+++ b/examples/v2/change-management/UpdateChangeRequest.rb
@@ -0,0 +1,50 @@
+# Update a change request returns "OK" response
+
+require "datadog_api_client"
+DatadogAPIClient.configure do |config|
+  config.unstable_operations["v2.update_change_request".to_sym] = true
+end
+api_instance = DatadogAPIClient::V2::ChangeManagementAPI.new
+
+body = DatadogAPIClient::V2::ChangeRequestUpdateRequest.new({
+  data: DatadogAPIClient::V2::ChangeRequestUpdateData.new({
+    attributes: DatadogAPIClient::V2::ChangeRequestUpdateAttributes.new({
+      change_request_plan: "Updated deployment plan",
+      change_request_risk: DatadogAPIClient::V2::ChangeRequestRiskLevel::LOW,
+      change_request_type: DatadogAPIClient::V2::ChangeRequestChangeType::NORMAL,
+      end_date: "2024-01-02T15:00:00Z",
+      id: "CHM-1234",
+      start_date: "2024-01-01T03:00:00Z",
+    }),
+    relationships: DatadogAPIClient::V2::ChangeRequestUpdateRelationships.new({
+      change_request_decisions: DatadogAPIClient::V2::ChangeRequestDecisionsRelationship.new({
+        data: [
+          DatadogAPIClient::V2::ChangeRequestDecisionRelationshipData.new({
+            id: "decision-id-0",
+            type: DatadogAPIClient::V2::ChangeRequestDecisionResourceType::CHANGE_REQUEST_DECISION,
+          }),
+        ],
+      }),
+    }),
+    type: DatadogAPIClient::V2::ChangeRequestResourceType::CHANGE_REQUEST,
+  }),
+  included: [
+    DatadogAPIClient::V2::ChangeRequestDecisionCreateItem.new({
+      attributes: DatadogAPIClient::V2::ChangeRequestDecisionCreateAttributes.new({
+        change_request_status: DatadogAPIClient::V2::ChangeRequestDecisionStatusType::REQUESTED,
+        request_reason: "Please review and approve this change",
+      }),
+      id: "decision-id-0",
+      relationships: DatadogAPIClient::V2::ChangeRequestDecisionCreateRelationships.new({
+        requested_user: DatadogAPIClient::V2::ChangeRequestUserRelationship.new({
+          data: DatadogAPIClient::V2::ChangeRequestUserRelationshipData.new({
+            id: "00000000-0000-0000-0000-000000000000",
+            type: "user",
+          }),
+        }),
+      }),
+      type: DatadogAPIClient::V2::ChangeRequestDecisionResourceType::CHANGE_REQUEST_DECISION,
+    }),
+  ],
+})
+p api_instance.update_change_request("change_request_id", body)
diff --git a/examples/v2/change-management/UpdateChangeRequestDecision.rb b/examples/v2/change-management/UpdateChangeRequestDecision.rb
new file mode 100644
index 00000000000..da9bcf65eb3
--- /dev/null
+++ b/examples/v2/change-management/UpdateChangeRequestDecision.rb
@@ -0,0 +1,45 @@
+# Update a change request decision returns "OK" response
+
+require "datadog_api_client"
+DatadogAPIClient.configure do |config|
+  config.unstable_operations["v2.update_change_request_decision".to_sym] = true
+end
+api_instance = DatadogAPIClient::V2::ChangeManagementAPI.new
+
+body = DatadogAPIClient::V2::ChangeRequestDecisionUpdateRequest.new({
+  data: DatadogAPIClient::V2::ChangeRequestDecisionUpdateData.new({
+    attributes: DatadogAPIClient::V2::ChangeRequestDecisionUpdateDataAttributes.new({
+      id: "CHM-1234",
+    }),
+    relationships: DatadogAPIClient::V2::ChangeRequestDecisionUpdateDataRelationships.new({
+      change_request_decisions: DatadogAPIClient::V2::ChangeRequestDecisionsRelationship.new({
+        data: [
+          DatadogAPIClient::V2::ChangeRequestDecisionRelationshipData.new({
+            id: "decision-id-0",
+            type: DatadogAPIClient::V2::ChangeRequestDecisionResourceType::CHANGE_REQUEST_DECISION,
+          }),
+        ],
+      }),
+    }),
+    type: DatadogAPIClient::V2::ChangeRequestResourceType::CHANGE_REQUEST,
+  }),
+  included: [
+    DatadogAPIClient::V2::ChangeRequestDecisionCreateItem.new({
+      attributes: DatadogAPIClient::V2::ChangeRequestDecisionCreateAttributes.new({
+        change_request_status: DatadogAPIClient::V2::ChangeRequestDecisionStatusType::REQUESTED,
+        request_reason: "Please review and approve this change",
+      }),
+      id: "decision-id-0",
+      relationships: DatadogAPIClient::V2::ChangeRequestDecisionCreateRelationships.new({
+        requested_user: DatadogAPIClient::V2::ChangeRequestUserRelationship.new({
+          data: DatadogAPIClient::V2::ChangeRequestUserRelationshipData.new({
+            id: "00000000-0000-0000-0000-000000000000",
+            type: "user",
+          }),
+        }),
+      }),
+      type: DatadogAPIClient::V2::ChangeRequestDecisionResourceType::CHANGE_REQUEST_DECISION,
+    }),
+  ],
+})
+p api_instance.update_change_request_decision("change_request_id", "decision_id", body)
diff --git a/features/scenarios_model_mapping.rb b/features/scenarios_model_mapping.rb
index 91dd023b112..058c6fd26cc 100644
--- a/features/scenarios_model_mapping.rb
+++ b/features/scenarios_model_mapping.rb
@@ -1357,6 +1357,29 @@
             "include" => "RelationIncludeType",
             "include_discovered" => "Boolean",
     },
+    "v2.CreateChangeRequest" => {
+            "body" => "ChangeRequestCreateRequest",
+    },
+    "v2.GetChangeRequest" => {
+            "change_request_id" => "String",
+    },
+    "v2.UpdateChangeRequest" => {
+            "change_request_id" => "String",
+            "body" => "ChangeRequestUpdateRequest",
+    },
+    "v2.CreateChangeRequestBranch" => {
+            "change_request_id" => "String",
+            "body" => "ChangeRequestBranchCreateRequest",
+    },
+    "v2.DeleteChangeRequestDecision" => {
+            "change_request_id" => "String",
+            "decision_id" => "String",
+    },
+    "v2.UpdateChangeRequestDecision" => {
+            "change_request_id" => "String",
+            "decision_id" => "String",
+            "body" => "ChangeRequestDecisionUpdateRequest",
+    },
     "v2.CreateCIAppPipelineEvent" => {
             "body" => "CIAppCreatePipelineEventRequest",
     },
diff --git a/features/v2/change_management.feature b/features/v2/change_management.feature
new file mode 100644
index 00000000000..dbbae657bb8
--- /dev/null
+++ b/features/v2/change_management.feature
@@ -0,0 +1,162 @@
+@endpoint(change-management) @endpoint(change-management-v2)
+Feature: Change Management
+  View and manage change requests within Change Management. See the [Case
+  Management
+  page](https://docs.datadoghq.com/service_management/case_management/) for
+  more information.
+
+  Background:
+    Given a valid "apiKeyAuth" key in the system
+    And a valid "appKeyAuth" key in the system
+    And an instance of "ChangeManagement" API
+
+  @generated @skip @team:DataDog/case-management
+  Scenario: Create a change request branch returns "Bad Request" response
+    Given operation "CreateChangeRequestBranch" enabled
+    And new "CreateChangeRequestBranch" request
+    And request contains "change_request_id" parameter from "REPLACE.ME"
+    And body with value {"data": {"attributes": {"branch_name": "chm/CHM-1234", "repo_id": "DataDog/dd-source"}, "type": "change_request_branch"}}
+    When the request is sent
+    Then the response status is 400 Bad Request
+
+  @generated @skip @team:DataDog/case-management
+  Scenario: Create a change request branch returns "Not Found" response
+    Given operation "CreateChangeRequestBranch" enabled
+    And new "CreateChangeRequestBranch" request
+    And request contains "change_request_id" parameter from "REPLACE.ME"
+    And body with value {"data": {"attributes": {"branch_name": "chm/CHM-1234", "repo_id": "DataDog/dd-source"}, "type": "change_request_branch"}}
+    When the request is sent
+    Then the response status is 404 Not Found
+
+  @generated @skip @team:DataDog/case-management
+  Scenario: Create a change request branch returns "OK" response
+    Given operation "CreateChangeRequestBranch" enabled
+    And new "CreateChangeRequestBranch" request
+    And request contains "change_request_id" parameter from "REPLACE.ME"
+    And body with value {"data": {"attributes": {"branch_name": "chm/CHM-1234", "repo_id": "DataDog/dd-source"}, "type": "change_request_branch"}}
+    When the request is sent
+    Then the response status is 200 OK
+
+  @generated @skip @team:DataDog/case-management
+  Scenario: Create a change request returns "Bad Request" response
+    Given operation "CreateChangeRequest" enabled
+    And new "CreateChangeRequest" request
+    And body with value {"data": {"attributes": {"change_request_linked_incident_uuid": "00000000-0000-0000-0000-000000000000", "change_request_maintenance_window_query": "", "change_request_plan": "1. Deploy to staging 2. Run tests 3. Deploy to production", "change_request_risk": "LOW", "change_request_type": "NORMAL", "description": "Deploying new payment service v2.1", "end_date": "2024-01-02T15:00:00Z", "project_id": "d4bbe1af-f36e-42f1-87c1-493ca35c320e", "requested_teams": ["team-handle-1"], "start_date": "2024-01-01T03:00:00Z", "title": "Deploy new payment service"}, "type": "change_request"}}
+    When the request is sent
+    Then the response status is 400 Bad Request
+
+  @generated @skip @team:DataDog/case-management
+  Scenario: Create a change request returns "Created" response
+    Given operation "CreateChangeRequest" enabled
+    And new "CreateChangeRequest" request
+    And body with value {"data": {"attributes": {"change_request_linked_incident_uuid": "00000000-0000-0000-0000-000000000000", "change_request_maintenance_window_query": "", "change_request_plan": "1. Deploy to staging 2. Run tests 3. Deploy to production", "change_request_risk": "LOW", "change_request_type": "NORMAL", "description": "Deploying new payment service v2.1", "end_date": "2024-01-02T15:00:00Z", "project_id": "d4bbe1af-f36e-42f1-87c1-493ca35c320e", "requested_teams": ["team-handle-1"], "start_date": "2024-01-01T03:00:00Z", "title": "Deploy new payment service"}, "type": "change_request"}}
+    When the request is sent
+    Then the response status is 201 Created
+
+  @generated @skip @team:DataDog/case-management
+  Scenario: Delete a change request decision returns "Bad Request" response
+    Given operation "DeleteChangeRequestDecision" enabled
+    And new "DeleteChangeRequestDecision" request
+    And request contains "change_request_id" parameter from "REPLACE.ME"
+    And request contains "decision_id" parameter from "REPLACE.ME"
+    When the request is sent
+    Then the response status is 400 Bad Request
+
+  @generated @skip @team:DataDog/case-management
+  Scenario: Delete a change request decision returns "Not Found" response
+    Given operation "DeleteChangeRequestDecision" enabled
+    And new "DeleteChangeRequestDecision" request
+    And request contains "change_request_id" parameter from "REPLACE.ME"
+    And request contains "decision_id" parameter from "REPLACE.ME"
+    When the request is sent
+    Then the response status is 404 Not Found
+
+  @generated @skip @team:DataDog/case-management
+  Scenario: Delete a change request decision returns "OK" response
+    Given operation "DeleteChangeRequestDecision" enabled
+    And new "DeleteChangeRequestDecision" request
+    And request contains "change_request_id" parameter from "REPLACE.ME"
+    And request contains "decision_id" parameter from "REPLACE.ME"
+    When the request is sent
+    Then the response status is 200 OK
+
+  @generated @skip @team:DataDog/case-management
+  Scenario: Get a change request returns "Bad Request" response
+    Given operation "GetChangeRequest" enabled
+    And new "GetChangeRequest" request
+    And request contains "change_request_id" parameter from "REPLACE.ME"
+    When the request is sent
+    Then the response status is 400 Bad Request
+
+  @generated @skip @team:DataDog/case-management
+  Scenario: Get a change request returns "Not Found" response
+    Given operation "GetChangeRequest" enabled
+    And new "GetChangeRequest" request
+    And request contains "change_request_id" parameter from "REPLACE.ME"
+    When the request is sent
+    Then the response status is 404 Not Found
+
+  @generated @skip @team:DataDog/case-management
+  Scenario: Get a change request returns "OK" response
+    Given operation "GetChangeRequest" enabled
+    And new "GetChangeRequest" request
+    And request contains "change_request_id" parameter from "REPLACE.ME"
+    When the request is sent
+    Then the response status is 200 OK
+
+  @generated @skip @team:DataDog/case-management
+  Scenario: Update a change request decision returns "Bad Request" response
+    Given operation "UpdateChangeRequestDecision" enabled
+    And new "UpdateChangeRequestDecision" request
+    And request contains "change_request_id" parameter from "REPLACE.ME"
+    And request contains "decision_id" parameter from "REPLACE.ME"
+    And body with value {"data": {"attributes": {"id": "CHM-1234"}, "relationships": {"change_request_decisions": {"data": [{"id": "decision-id-0", "type": "change_request_decision"}]}}, "type": "change_request"}, "included": [{"attributes": {"change_request_status": "REQUESTED", "request_reason": "Please review and approve this change"}, "id": "decision-id-0", "relationships": {"requested_user": {"data": {"id": "00000000-0000-0000-0000-000000000000", "type": "user"}}}, "type": "change_request_decision"}]}
+    When the request is sent
+    Then the response status is 400 Bad Request
+
+  @generated @skip @team:DataDog/case-management
+  Scenario: Update a change request decision returns "Not Found" response
+    Given operation "UpdateChangeRequestDecision" enabled
+    And new "UpdateChangeRequestDecision" request
+    And request contains "change_request_id" parameter from "REPLACE.ME"
+    And request contains "decision_id" parameter from "REPLACE.ME"
+    And body with value {"data": {"attributes": {"id": "CHM-1234"}, "relationships": {"change_request_decisions": {"data": [{"id": "decision-id-0", "type": "change_request_decision"}]}}, "type": "change_request"}, "included": [{"attributes": {"change_request_status": "REQUESTED", "request_reason": "Please review and approve this change"}, "id": "decision-id-0", "relationships": {"requested_user": {"data": {"id": "00000000-0000-0000-0000-000000000000", "type": "user"}}}, "type": "change_request_decision"}]}
+    When the request is sent
+    Then the response status is 404 Not Found
+
+  @generated @skip @team:DataDog/case-management
+  Scenario: Update a change request decision returns "OK" response
+    Given operation "UpdateChangeRequestDecision" enabled
+    And new "UpdateChangeRequestDecision" request
+    And request contains "change_request_id" parameter from "REPLACE.ME"
+    And request contains "decision_id" parameter from "REPLACE.ME"
+    And body with value {"data": {"attributes": {"id": "CHM-1234"}, "relationships": {"change_request_decisions": {"data": [{"id": "decision-id-0", "type": "change_request_decision"}]}}, "type": "change_request"}, "included": [{"attributes": {"change_request_status": "REQUESTED", "request_reason": "Please review and approve this change"}, "id": "decision-id-0", "relationships": {"requested_user": {"data": {"id": "00000000-0000-0000-0000-000000000000", "type": "user"}}}, "type": "change_request_decision"}]}
+    When the request is sent
+    Then the response status is 200 OK
+
+  @generated @skip @team:DataDog/case-management
+  Scenario: Update a change request returns "Bad Request" response
+    Given operation "UpdateChangeRequest" enabled
+    And new "UpdateChangeRequest" request
+    And request contains "change_request_id" parameter from "REPLACE.ME"
+    And body with value {"data": {"attributes": {"change_request_plan": "Updated deployment plan", "change_request_risk": "LOW", "change_request_type": "NORMAL", "end_date": "2024-01-02T15:00:00Z", "id": "CHM-1234", "start_date": "2024-01-01T03:00:00Z"}, "relationships": {"change_request_decisions": {"data": [{"id": "decision-id-0", "type": "change_request_decision"}]}}, "type": "change_request"}, "included": [{"attributes": {"change_request_status": "REQUESTED", "request_reason": "Please review and approve this change"}, "id": "decision-id-0", "relationships": {"requested_user": {"data": {"id": "00000000-0000-0000-0000-000000000000", "type": "user"}}}, "type": "change_request_decision"}]}
+    When the request is sent
+    Then the response status is 400 Bad Request
+
+  @generated @skip @team:DataDog/case-management
+  Scenario: Update a change request returns "Not Found" response
+    Given operation "UpdateChangeRequest" enabled
+    And new "UpdateChangeRequest" request
+    And request contains "change_request_id" parameter from "REPLACE.ME"
+    And body with value {"data": {"attributes": {"change_request_plan": "Updated deployment plan", "change_request_risk": "LOW", "change_request_type": "NORMAL", "end_date": "2024-01-02T15:00:00Z", "id": "CHM-1234", "start_date": "2024-01-01T03:00:00Z"}, "relationships": {"change_request_decisions": {"data": [{"id": "decision-id-0", "type": "change_request_decision"}]}}, "type": "change_request"}, "included": [{"attributes": {"change_request_status": "REQUESTED", "request_reason": "Please review and approve this change"}, "id": "decision-id-0", "relationships": {"requested_user": {"data": {"id": "00000000-0000-0000-0000-000000000000", "type": "user"}}}, "type": "change_request_decision"}]}
+    When the request is sent
+    Then the response status is 404 Not Found
+
+  @generated @skip @team:DataDog/case-management
+  Scenario: Update a change request returns "OK" response
+    Given operation "UpdateChangeRequest" enabled
+    And new "UpdateChangeRequest" request
+    And request contains "change_request_id" parameter from "REPLACE.ME"
+    And body with value {"data": {"attributes": {"change_request_plan": "Updated deployment plan", "change_request_risk": "LOW", "change_request_type": "NORMAL", "end_date": "2024-01-02T15:00:00Z", "id": "CHM-1234", "start_date": "2024-01-01T03:00:00Z"}, "relationships": {"change_request_decisions": {"data": [{"id": "decision-id-0", "type": "change_request_decision"}]}}, "type": "change_request"}, "included": [{"attributes": {"change_request_status": "REQUESTED", "request_reason": "Please review and approve this change"}, "id": "decision-id-0", "relationships": {"requested_user": {"data": {"id": "00000000-0000-0000-0000-000000000000", "type": "user"}}}, "type": "change_request_decision"}]}
+    When the request is sent
+    Then the response status is 200 OK
diff --git a/features/v2/undo.json b/features/v2/undo.json
index 10efec9a5c1..53890381408 100644
--- a/features/v2/undo.json
+++ b/features/v2/undo.json
@@ -972,6 +972,46 @@
       "type": "safe"
     }
   },
+  "CreateChangeRequest": {
+    "tag": "Change Management",
+    "undo": {
+      "operationId": "TODO",
+      "parameters": [],
+      "type": "unsafe"
+    }
+  },
+  "GetChangeRequest": {
+    "tag": "Change Management",
+    "undo": {
+      "type": "safe"
+    }
+  },
+  "UpdateChangeRequest": {
+    "tag": "Change Management",
+    "undo": {
+      "type": "idempotent"
+    }
+  },
+  "CreateChangeRequestBranch": {
+    "tag": "Change Management",
+    "undo": {
+      "operationId": "TODO",
+      "parameters": [],
+      "type": "unsafe"
+    }
+  },
+  "DeleteChangeRequestDecision": {
+    "tag": "Change Management",
+    "undo": {
+      "type": "idempotent"
+    }
+  },
+  "UpdateChangeRequestDecision": {
+    "tag": "Change Management",
+    "undo": {
+      "type": "idempotent"
+    }
+  },
   "CreateCIAppPipelineEvent": {
     "tag": "CI Visibility Pipelines",
     "undo": {
diff --git a/lib/datadog_api_client/configuration.rb b/lib/datadog_api_client/configuration.rb
index 4b2edf25db6..b4596bb39fe 100644
--- a/lib/datadog_api_client/configuration.rb
+++ b/lib/datadog_api_client/configuration.rb
@@ -215,6 +215,12 @@ def initialize
             "v2.link_jira_issue_to_case": false,
             "v2.move_case_to_project": false,
             "v2.unlink_jira_issue": false,
+            "v2.create_change_request": false,
+            "v2.create_change_request_branch": false,
+            "v2.delete_change_request_decision": false,
+            "v2.get_change_request": false,
+            "v2.update_change_request": false,
+            "v2.update_change_request_decision": false,
             "v2.list_aws_cloud_auth_persona_mappings": false,
             "v2.activate_content_pack": false,
             "v2.cancel_threat_hunting_job": false,
diff --git a/lib/datadog_api_client/inflector.rb b/lib/datadog_api_client/inflector.rb
index 77636ca0dc7..36a1ce2a3e0 100644
--- a/lib/datadog_api_client/inflector.rb
+++ b/lib/datadog_api_client/inflector.rb
@@ -1496,6 +1496,43 @@ def overrides
           "v2.change_event_custom_attributes_impacted_resources_items" => "ChangeEventCustomAttributesImpactedResourcesItems",
           "v2.change_event_custom_attributes_impacted_resources_items_type" => "ChangeEventCustomAttributesImpactedResourcesItemsType",
           "v2.change_event_trigger_wrapper" => "ChangeEventTriggerWrapper",
+          "v2.change_request_branch_create_attributes" => "ChangeRequestBranchCreateAttributes",
+          "v2.change_request_branch_create_data" => "ChangeRequestBranchCreateData",
+          "v2.change_request_branch_create_request" => "ChangeRequestBranchCreateRequest",
+          "v2.change_request_branch_resource_type" => "ChangeRequestBranchResourceType",
+          "v2.change_request_change_type" => "ChangeRequestChangeType",
+          "v2.change_request_create_attributes" => "ChangeRequestCreateAttributes",
+          "v2.change_request_create_data" => "ChangeRequestCreateData",
+          "v2.change_request_create_request" => "ChangeRequestCreateRequest",
+          "v2.change_request_decision_create_attributes" => "ChangeRequestDecisionCreateAttributes",
+          "v2.change_request_decision_create_item" => "ChangeRequestDecisionCreateItem",
+          "v2.change_request_decision_create_relationships" => "ChangeRequestDecisionCreateRelationships",
+          "v2.change_request_decision_relationship_data" => "ChangeRequestDecisionRelationshipData",
+          "v2.change_request_decision_relationships" => "ChangeRequestDecisionRelationships",
+          "v2.change_request_decision_resource_type" => "ChangeRequestDecisionResourceType",
+          "v2.change_request_decision_response_attributes" => "ChangeRequestDecisionResponseAttributes",
+          "v2.change_request_decisions_relationship" => "ChangeRequestDecisionsRelationship",
+          "v2.change_request_decision_status_type" => "ChangeRequestDecisionStatusType",
+          "v2.change_request_decision_update_data" => "ChangeRequestDecisionUpdateData",
+          "v2.change_request_decision_update_data_attributes" => "ChangeRequestDecisionUpdateDataAttributes",
+          "v2.change_request_decision_update_data_relationships" => "ChangeRequestDecisionUpdateDataRelationships",
+          "v2.change_request_decision_update_request" => "ChangeRequestDecisionUpdateRequest",
+          "v2.change_request_included_decision" => "ChangeRequestIncludedDecision",
+          "v2.change_request_included_item" => "ChangeRequestIncludedItem",
+          "v2.change_request_included_user" => "ChangeRequestIncludedUser",
+          "v2.change_request_included_user_attributes" => "ChangeRequestIncludedUserAttributes",
+          "v2.change_request_relationships" => "ChangeRequestRelationships",
+          "v2.change_request_resource_type" => "ChangeRequestResourceType",
+          "v2.change_request_response" => "ChangeRequestResponse",
+          "v2.change_request_response_attributes" => "ChangeRequestResponseAttributes",
+          "v2.change_request_response_data" => "ChangeRequestResponseData",
+          "v2.change_request_risk_level" => "ChangeRequestRiskLevel",
+          "v2.change_request_update_attributes" => "ChangeRequestUpdateAttributes",
+          "v2.change_request_update_data" => "ChangeRequestUpdateData",
+          "v2.change_request_update_relationships" => "ChangeRequestUpdateRelationships",
+          "v2.change_request_update_request" => "ChangeRequestUpdateRequest",
+          "v2.change_request_user_relationship" => "ChangeRequestUserRelationship",
+          "v2.change_request_user_relationship_data" => "ChangeRequestUserRelationshipData",
           "v2.chargeback_breakdown" => "ChargebackBreakdown",
           "v2.ci_app_aggregate_bucket_value" => "CIAppAggregateBucketValue",
           "v2.ci_app_aggregate_bucket_value_timeseries_point" => "CIAppAggregateBucketValueTimeseriesPoint",
@@ -5354,6 +5391,7 @@ def overrides
         "v2.case_management_api" => "CaseManagementAPI",
         "v2.case_management_attribute_api" => "CaseManagementAttributeAPI",
         "v2.case_management_type_api" => "CaseManagementTypeAPI",
+        "v2.change_management_api" => "ChangeManagementAPI",
         "v2.ci_visibility_pipelines_api" => "CIVisibilityPipelinesAPI",
         "v2.ci_visibility_tests_api" => "CIVisibilityTestsAPI",
         "v2.cloud_authentication_api" => "CloudAuthenticationAPI",
diff --git a/lib/datadog_api_client/v2/api/change_management_api.rb b/lib/datadog_api_client/v2/api/change_management_api.rb
new file mode 100644
index 00000000000..775fbcf8a6e
--- /dev/null
+++ b/lib/datadog_api_client/v2/api/change_management_api.rb
@@ -0,0 +1,485 @@
+=begin
+#Datadog API V2 Collection
+
+#Collection of all Datadog Public endpoints.
+
+The version of the OpenAPI document: 1.0
+Contact: support@datadoghq.com
+Generated by: https://github.com/DataDog/datadog-api-client-ruby/tree/master/.generator
+
+ Unless explicitly stated otherwise all files in this repository are licensed under the Apache-2.0 License.
+ This product includes software developed at Datadog (https://www.datadoghq.com/).
+ Copyright 2020-Present Datadog, Inc.
+
+=end
+
+require 'cgi'
+
+module DatadogAPIClient::V2
+  class ChangeManagementAPI
+    attr_accessor :api_client
+
+    def initialize(api_client = DatadogAPIClient::APIClient.default)
+      @api_client = api_client
+    end
+
+    # Create a change request.
+    #
+    # @see #create_change_request_with_http_info
+    def create_change_request(body, opts = {})
+      data, _status_code, _headers = create_change_request_with_http_info(body, opts)
+      data
+    end
+
+    # Create a change request.
+    #
+    # Create a new change request.
+    #
+    # @param body [ChangeRequestCreateRequest] Change request payload.
+    # @param opts [Hash] the optional parameters
+    # @return [Array<(ChangeRequestResponse, Integer, Hash)>] ChangeRequestResponse data, response status code and response headers
+    def create_change_request_with_http_info(body, opts = {})
+      unstable_enabled = @api_client.config.unstable_operations["v2.create_change_request".to_sym]
+      if unstable_enabled
+        @api_client.config.logger.warn format("Using unstable operation '%s'", "v2.create_change_request")
+      else
+        raise DatadogAPIClient::APIError.new(message: format("Unstable operation '%s' is disabled", "v2.create_change_request"))
+      end
+
+      if @api_client.config.debugging
+        @api_client.config.logger.debug 'Calling API: ChangeManagementAPI.create_change_request ...'
+      end
+      # verify the required parameter 'body' is set
+      if @api_client.config.client_side_validation && body.nil?
+        fail ArgumentError, "Missing the required parameter 'body' when calling ChangeManagementAPI.create_change_request"
+      end
+      # resource path
+      local_var_path = '/api/v2/change-management/change-request'
+
+      # query parameters
+      query_params = opts[:query_params] || {}
+
+      # header parameters
+      header_params = opts[:header_params] || {}
+      # HTTP header 'Accept' (if needed)
+      header_params['Accept'] = @api_client.select_header_accept(['application/json'])
+      # HTTP header 'Content-Type'
+      header_params['Content-Type'] = @api_client.select_header_content_type(['application/json'])
+
+      # form parameters
+      form_params = opts[:form_params] || {}
+
+      # http body (model)
+      post_body = opts[:debug_body] || @api_client.object_to_http_body(body)
+
+      # return_type
+      return_type = opts[:debug_return_type] || 'ChangeRequestResponse'
+
+      # auth_names
+      auth_names = opts[:debug_auth_names] || [:apiKeyAuth, :appKeyAuth, :AuthZ]
+
+      new_options = opts.merge(
+        :operation => :create_change_request,
+        :header_params => header_params,
+        :query_params => query_params,
+        :form_params => form_params,
+        :body => post_body,
+        :auth_names => auth_names,
+        :return_type => return_type,
+        :api_version => "V2"
+      )
+
+      data, status_code, headers = @api_client.call_api(Net::HTTP::Post, local_var_path, new_options)
+      if @api_client.config.debugging
+        @api_client.config.logger.debug "API called: ChangeManagementAPI#create_change_request\nData: #{data.inspect}\nStatus code: #{status_code}\nHeaders: #{headers}"
+      end
+      return data, status_code, headers
+    end
+
+    # Create a change request branch.
+    #
+    # @see #create_change_request_branch_with_http_info
+    def create_change_request_branch(change_request_id, body, opts = {})
+      data, _status_code, _headers = create_change_request_branch_with_http_info(change_request_id, body, opts)
+      data
+    end
+
+    # Create a change request branch.
+    #
+    # Create a new branch in a repository for a change request.
+    #
+    # @param change_request_id [String] The identifier of the change request.
+    # @param body [ChangeRequestBranchCreateRequest] Branch creation payload.
+    # @param opts [Hash] the optional parameters
+    # @return [Array<(ChangeRequestResponse, Integer, Hash)>] ChangeRequestResponse data, response status code and response headers
+    def create_change_request_branch_with_http_info(change_request_id, body, opts = {})
+      unstable_enabled = @api_client.config.unstable_operations["v2.create_change_request_branch".to_sym]
+      if unstable_enabled
+        @api_client.config.logger.warn format("Using unstable operation '%s'", "v2.create_change_request_branch")
+      else
+        raise DatadogAPIClient::APIError.new(message: format("Unstable operation '%s' is disabled", "v2.create_change_request_branch"))
+      end
+
+      if @api_client.config.debugging
+        @api_client.config.logger.debug 'Calling API: ChangeManagementAPI.create_change_request_branch ...'
+      end
+      # verify the required parameter 'change_request_id' is set
+      if @api_client.config.client_side_validation && change_request_id.nil?
+        fail ArgumentError, "Missing the required parameter 'change_request_id' when calling ChangeManagementAPI.create_change_request_branch"
+      end
+      # verify the required parameter 'body' is set
+      if @api_client.config.client_side_validation && body.nil?
+        fail ArgumentError, "Missing the required parameter 'body' when calling ChangeManagementAPI.create_change_request_branch"
+      end
+      # resource path
+      local_var_path = '/api/v2/change-management/change-request/{change_request_id}/branch'.sub('{change_request_id}', CGI.escape(change_request_id.to_s).gsub('%2F', '/'))
+
+      # query parameters
+      query_params = opts[:query_params] || {}
+
+      # header parameters
+      header_params = opts[:header_params] || {}
+      # HTTP header 'Accept' (if needed)
+      header_params['Accept'] = @api_client.select_header_accept(['application/json'])
+      # HTTP header 'Content-Type'
+      header_params['Content-Type'] = @api_client.select_header_content_type(['application/json'])
+
+      # form parameters
+      form_params = opts[:form_params] || {}
+
+      # http body (model)
+      post_body = opts[:debug_body] || @api_client.object_to_http_body(body)
+
+      # return_type
+      return_type = opts[:debug_return_type] || 'ChangeRequestResponse'
+
+      # auth_names
+      auth_names = opts[:debug_auth_names] || [:apiKeyAuth, :appKeyAuth, :AuthZ]
+
+      new_options = opts.merge(
+        :operation => :create_change_request_branch,
+        :header_params => header_params,
+        :query_params => query_params,
+        :form_params => form_params,
+        :body => post_body,
+        :auth_names => auth_names,
+        :return_type => return_type,
+        :api_version => "V2"
+      )
+
+      data, status_code, headers = @api_client.call_api(Net::HTTP::Post, local_var_path, new_options)
+      if @api_client.config.debugging
+        @api_client.config.logger.debug "API called: ChangeManagementAPI#create_change_request_branch\nData: #{data.inspect}\nStatus code: #{status_code}\nHeaders: #{headers}"
+      end
+      return data, status_code, headers
+    end
+
+    # Delete a change request decision.
+    #
+    # @see #delete_change_request_decision_with_http_info
+    def delete_change_request_decision(change_request_id, decision_id, opts = {})
+      data, _status_code, _headers = delete_change_request_decision_with_http_info(change_request_id, decision_id, opts)
+      data
+    end
+
+    # Delete a change request decision.
+    #
+    # Delete a decision from a change request.
+    #
+    # @param change_request_id [String] The identifier of the change request.
+    # @param decision_id [String] The identifier of the change request decision.
+    # @param opts [Hash] the optional parameters
+    # @return [Array<(ChangeRequestResponse, Integer, Hash)>] ChangeRequestResponse data, response status code and response headers
+    def delete_change_request_decision_with_http_info(change_request_id, decision_id, opts = {})
+      unstable_enabled = @api_client.config.unstable_operations["v2.delete_change_request_decision".to_sym]
+      if unstable_enabled
+        @api_client.config.logger.warn format("Using unstable operation '%s'", "v2.delete_change_request_decision")
+      else
+        raise DatadogAPIClient::APIError.new(message: format("Unstable operation '%s' is disabled", "v2.delete_change_request_decision"))
+      end
+
+      if @api_client.config.debugging
+        @api_client.config.logger.debug 'Calling API: ChangeManagementAPI.delete_change_request_decision ...'
+      end
+      # verify the required parameter 'change_request_id' is set
+      if @api_client.config.client_side_validation && change_request_id.nil?
+        fail ArgumentError, "Missing the required parameter 'change_request_id' when calling ChangeManagementAPI.delete_change_request_decision"
+      end
+      # verify the required parameter 'decision_id' is set
+      if @api_client.config.client_side_validation && decision_id.nil?
+        fail ArgumentError, "Missing the required parameter 'decision_id' when calling ChangeManagementAPI.delete_change_request_decision"
+      end
+      # resource path
+      local_var_path = '/api/v2/change-management/change-request/{change_request_id}/decisions/{decision_id}'.sub('{change_request_id}', CGI.escape(change_request_id.to_s).gsub('%2F', '/')).sub('{decision_id}', CGI.escape(decision_id.to_s).gsub('%2F', '/'))
+
+      # query parameters
+      query_params = opts[:query_params] || {}
+
+      # header parameters
+      header_params = opts[:header_params] || {}
+      # HTTP header 'Accept' (if needed)
+      header_params['Accept'] = @api_client.select_header_accept(['application/json'])
+
+      # form parameters
+      form_params = opts[:form_params] || {}
+
+      # http body (model)
+      post_body = opts[:debug_body]
+
+      # return_type
+      return_type = opts[:debug_return_type] || 'ChangeRequestResponse'
+
+      # auth_names
+      auth_names = opts[:debug_auth_names] || [:apiKeyAuth, :appKeyAuth, :AuthZ]
+
+      new_options = opts.merge(
+        :operation => :delete_change_request_decision,
+        :header_params => header_params,
+        :query_params => query_params,
+        :form_params => form_params,
+        :body => post_body,
+        :auth_names => auth_names,
+        :return_type => return_type,
+        :api_version => "V2"
+      )
+
+      data, status_code, headers = @api_client.call_api(Net::HTTP::Delete, local_var_path, new_options)
+      if @api_client.config.debugging
+        @api_client.config.logger.debug "API called: ChangeManagementAPI#delete_change_request_decision\nData: #{data.inspect}\nStatus code: #{status_code}\nHeaders: #{headers}"
+      end
+      return data, status_code, headers
+    end
+
+    # Get a change request.
+    #
+    # @see #get_change_request_with_http_info
+    def get_change_request(change_request_id, opts = {})
+      data, _status_code, _headers = get_change_request_with_http_info(change_request_id, opts)
+      data
+    end
+
+    # Get a change request.
+    #
+    # Get the details of a change request by its ID.
+    #
+    # @param change_request_id [String] The identifier of the change request.
+    # @param opts [Hash] the optional parameters
+    # @return [Array<(ChangeRequestResponse, Integer, Hash)>] ChangeRequestResponse data, response status code and response headers
+    def get_change_request_with_http_info(change_request_id, opts = {})
+      unstable_enabled = @api_client.config.unstable_operations["v2.get_change_request".to_sym]
+      if unstable_enabled
+        @api_client.config.logger.warn format("Using unstable operation '%s'", "v2.get_change_request")
+      else
+        raise DatadogAPIClient::APIError.new(message: format("Unstable operation '%s' is disabled", "v2.get_change_request"))
+      end
+
+      if @api_client.config.debugging
+        @api_client.config.logger.debug 'Calling API: ChangeManagementAPI.get_change_request ...'
+      end
+      # verify the required parameter 'change_request_id' is set
+      if @api_client.config.client_side_validation && change_request_id.nil?
+        fail ArgumentError, "Missing the required parameter 'change_request_id' when calling ChangeManagementAPI.get_change_request"
+      end
+      # resource path
+      local_var_path = '/api/v2/change-management/change-request/{change_request_id}'.sub('{change_request_id}', CGI.escape(change_request_id.to_s).gsub('%2F', '/'))
+
+      # query parameters
+      query_params = opts[:query_params] || {}
+
+      # header parameters
+      header_params = opts[:header_params] || {}
+      # HTTP header 'Accept' (if needed)
+      header_params['Accept'] = @api_client.select_header_accept(['application/json'])
+
+      # form parameters
+      form_params = opts[:form_params] || {}
+
+      # http body (model)
+      post_body = opts[:debug_body]
+
+      # return_type
+      return_type = opts[:debug_return_type] || 'ChangeRequestResponse'
+
+      # auth_names
+      auth_names = opts[:debug_auth_names] || [:apiKeyAuth, :appKeyAuth, :AuthZ]
+
+      new_options = opts.merge(
+        :operation => :get_change_request,
+        :header_params => header_params,
+        :query_params => query_params,
+        :form_params => form_params,
+        :body => post_body,
+        :auth_names => auth_names,
+        :return_type => return_type,
+        :api_version => "V2"
+      )
+
+      data, status_code, headers = @api_client.call_api(Net::HTTP::Get, local_var_path, new_options)
+      if @api_client.config.debugging
+        @api_client.config.logger.debug "API called: ChangeManagementAPI#get_change_request\nData: #{data.inspect}\nStatus code: #{status_code}\nHeaders: #{headers}"
+      end
+      return data, status_code, headers
+    end
+
+    # Update a change request.
+    #
+    # @see #update_change_request_with_http_info
+    def update_change_request(change_request_id, body, opts = {})
+      data, _status_code, _headers = update_change_request_with_http_info(change_request_id, body, opts)
+      data
+    end
+
+    # Update a change request.
+    #
+    # Update the properties of a change request.
+    #
+    # @param change_request_id [String] The identifier of the change request.
+    # @param body [ChangeRequestUpdateRequest] Change request update payload.
+    # @param opts [Hash] the optional parameters
+    # @return [Array<(ChangeRequestResponse, Integer, Hash)>] ChangeRequestResponse data, response status code and response headers
+    def update_change_request_with_http_info(change_request_id, body, opts = {})
+      unstable_enabled = @api_client.config.unstable_operations["v2.update_change_request".to_sym]
+      if unstable_enabled
+        @api_client.config.logger.warn format("Using unstable operation '%s'", "v2.update_change_request")
+      else
+        raise DatadogAPIClient::APIError.new(message: format("Unstable operation '%s' is disabled", "v2.update_change_request"))
+      end
+
+      if @api_client.config.debugging
+        @api_client.config.logger.debug 'Calling API: ChangeManagementAPI.update_change_request ...'
+      end
+      # verify the required parameter 'change_request_id' is set
+      if @api_client.config.client_side_validation && change_request_id.nil?
+        fail ArgumentError, "Missing the required parameter 'change_request_id' when calling ChangeManagementAPI.update_change_request"
+      end
+      # verify the required parameter 'body' is set
+      if @api_client.config.client_side_validation && body.nil?
+        fail ArgumentError, "Missing the required parameter 'body' when calling ChangeManagementAPI.update_change_request"
+      end
+      # resource path
+      local_var_path = '/api/v2/change-management/change-request/{change_request_id}'.sub('{change_request_id}', CGI.escape(change_request_id.to_s).gsub('%2F', '/'))
+
+      # query parameters
+      query_params = opts[:query_params] || {}
+
+      # header parameters
+      header_params = opts[:header_params] || {}
+      # HTTP header 'Accept' (if needed)
+      header_params['Accept'] = @api_client.select_header_accept(['application/json'])
+      # HTTP header 'Content-Type'
+      header_params['Content-Type'] = @api_client.select_header_content_type(['application/json'])
+
+      # form parameters
+      form_params = opts[:form_params] || {}
+
+      # http body (model)
+      post_body = opts[:debug_body] || @api_client.object_to_http_body(body)
+
+      # return_type
+      return_type = opts[:debug_return_type] || 'ChangeRequestResponse'
+
+      # auth_names
+      auth_names = opts[:debug_auth_names] || [:apiKeyAuth, :appKeyAuth, :AuthZ]
+
+      new_options = opts.merge(
+        :operation => :update_change_request,
+        :header_params => header_params,
+        :query_params => query_params,
+        :form_params => form_params,
+        :body => post_body,
+        :auth_names => auth_names,
+        :return_type => return_type,
+        :api_version => "V2"
+      )
+
+      data, status_code, headers = @api_client.call_api(Net::HTTP::Patch, local_var_path, new_options)
+      if @api_client.config.debugging
+        @api_client.config.logger.debug "API called: ChangeManagementAPI#update_change_request\nData: #{data.inspect}\nStatus code: #{status_code}\nHeaders: #{headers}"
+      end
+      return data, status_code, headers
+    end
+
+    # Update a change request decision.
+    #
+    # @see #update_change_request_decision_with_http_info
+    def update_change_request_decision(change_request_id, decision_id, body, opts = {})
+      data, _status_code, _headers = update_change_request_decision_with_http_info(change_request_id, decision_id, body, opts)
+      data
+    end
+
+    # Update a change request decision.
+    #
+    # Update a decision on a change request, such as approving or declining it.
+    #
+    # @param change_request_id [String] The identifier of the change request.
+    # @param decision_id [String] The identifier of the change request decision.
+    # @param body [ChangeRequestDecisionUpdateRequest] Decision update payload.
+    # @param opts [Hash] the optional parameters
+    # @return [Array<(ChangeRequestResponse, Integer, Hash)>] ChangeRequestResponse data, response status code and response headers
+    def update_change_request_decision_with_http_info(change_request_id, decision_id, body, opts = {})
+      unstable_enabled = @api_client.config.unstable_operations["v2.update_change_request_decision".to_sym]
+      if unstable_enabled
+        @api_client.config.logger.warn format("Using unstable operation '%s'", "v2.update_change_request_decision")
+      else
+        raise DatadogAPIClient::APIError.new(message: format("Unstable operation '%s' is disabled", "v2.update_change_request_decision"))
+      end
+
+      if @api_client.config.debugging
+        @api_client.config.logger.debug 'Calling API: ChangeManagementAPI.update_change_request_decision ...'
+      end
+      # verify the required parameter 'change_request_id' is set
+      if @api_client.config.client_side_validation && change_request_id.nil?
+        fail ArgumentError, "Missing the required parameter 'change_request_id' when calling ChangeManagementAPI.update_change_request_decision"
+      end
+      # verify the required parameter 'decision_id' is set
+      if @api_client.config.client_side_validation && decision_id.nil?
+        fail ArgumentError, "Missing the required parameter 'decision_id' when calling ChangeManagementAPI.update_change_request_decision"
+      end
+      # verify the required parameter 'body' is set
+      if @api_client.config.client_side_validation && body.nil?
+        fail ArgumentError, "Missing the required parameter 'body' when calling ChangeManagementAPI.update_change_request_decision"
+      end
+      # resource path
+      local_var_path = '/api/v2/change-management/change-request/{change_request_id}/decisions/{decision_id}'.sub('{change_request_id}', CGI.escape(change_request_id.to_s).gsub('%2F', '/')).sub('{decision_id}', CGI.escape(decision_id.to_s).gsub('%2F', '/'))
+
+      # query parameters
+      query_params = opts[:query_params] || {}
+
+      # header parameters
+      header_params = opts[:header_params] || {}
+      # HTTP header 'Accept' (if needed)
+      header_params['Accept'] = @api_client.select_header_accept(['application/json'])
+      # HTTP header 'Content-Type'
+      header_params['Content-Type'] = @api_client.select_header_content_type(['application/json'])
+
+      # form parameters
+      form_params = opts[:form_params] || {}
+
+      # http body (model)
+      post_body = opts[:debug_body] || @api_client.object_to_http_body(body)
+
+      # return_type
+      return_type = opts[:debug_return_type] || 'ChangeRequestResponse'
+
+      # auth_names
+      auth_names = opts[:debug_auth_names] || [:apiKeyAuth, :appKeyAuth, :AuthZ]
+
+      new_options = opts.merge(
+        :operation => :update_change_request_decision,
+        :header_params => header_params,
+        :query_params => query_params,
+        :form_params => form_params,
+        :body => post_body,
+        :auth_names => auth_names,
+        :return_type => return_type,
+        :api_version => "V2"
+      )
+
+      data, status_code, headers = @api_client.call_api(Net::HTTP::Patch, local_var_path, new_options)
+      if @api_client.config.debugging
+        @api_client.config.logger.debug "API called: ChangeManagementAPI#update_change_request_decision\nData: #{data.inspect}\nStatus code: #{status_code}\nHeaders: #{headers}"
+      end
+      return data, status_code, headers
+    end
+  end
+end
diff --git a/lib/datadog_api_client/v2/models/change_request_branch_create_attributes.rb b/lib/datadog_api_client/v2/models/change_request_branch_create_attributes.rb
new file mode 100644
index 00000000000..f87fdccda59
--- /dev/null
+++ b/lib/datadog_api_client/v2/models/change_request_branch_create_attributes.rb
@@ -0,0 +1,144 @@
+=begin
+#Datadog API V2 Collection
+
+#Collection of all Datadog Public endpoints.
+
+The version of the OpenAPI document: 1.0
+Contact: support@datadoghq.com
+Generated by: https://github.com/DataDog/datadog-api-client-ruby/tree/master/.generator
+
+ Unless explicitly stated otherwise all files in this repository are licensed under the Apache-2.0 License.
+ This product includes software developed at Datadog (https://www.datadoghq.com/).
+ Copyright 2020-Present Datadog, Inc.
+
+=end
+
+require 'date'
+require 'time'
+
+module DatadogAPIClient::V2
+  # Attributes for creating a change request branch.
+  class ChangeRequestBranchCreateAttributes
+    include BaseGenericModel
+
+    # The name of the branch to create.
+    attr_reader :branch_name
+
+    # The repository identifier in the format owner/repository.
+    attr_reader :repo_id
+
+    attr_accessor :additional_properties
+
+    # Attribute mapping from ruby-style variable name to JSON key.
+    # @!visibility private
+    def self.attribute_map
+      {
+        :'branch_name' => :'branch_name',
+        :'repo_id' => :'repo_id'
+      }
+    end
+
+    # Attribute type mapping.
+    # @!visibility private
+    def self.openapi_types
+      {
+        :'branch_name' => :'String',
+        :'repo_id' => :'String'
+      }
+    end
+
+    # Initializes the object
+    # @param attributes [Hash] Model attributes in the form of hash
+    # @!visibility private
+    def initialize(attributes = {})
+      if (!attributes.is_a?(Hash))
+        fail ArgumentError, "The input argument (attributes) must be a hash in `DatadogAPIClient::V2::ChangeRequestBranchCreateAttributes` initialize method"
+      end
+
+      self.additional_properties = {}
+      # check to see if the attribute exists and convert string to symbol for hash key
+      attributes = attributes.each_with_object({}) { |(k, v), h|
+        if (!self.class.attribute_map.key?(k.to_sym))
+          self.additional_properties[k.to_sym] = v
+        else
+          h[k.to_sym] = v
+        end
+      }
+
+      if attributes.key?(:'branch_name')
+        self.branch_name = attributes[:'branch_name']
+      end
+
+      if attributes.key?(:'repo_id')
+        self.repo_id = attributes[:'repo_id']
+      end
+    end
+
+    # Check to see if the all the properties in the model are valid
+    # @return true if the model is valid
+    # @!visibility private
+    def valid?
+      return false if @branch_name.nil?
+      return false if @repo_id.nil?
+      true
+    end
+
+    # Custom attribute writer method with validation
+    # @param branch_name [Object] Object to be assigned
+    # @!visibility private
+    def branch_name=(branch_name)
+      if branch_name.nil?
+        fail ArgumentError, 'invalid value for "branch_name", branch_name cannot be nil.'
+      end
+      @branch_name = branch_name
+    end
+
+    # Custom attribute writer method with validation
+    # @param repo_id [Object] Object to be assigned
+    # @!visibility private
+    def repo_id=(repo_id)
+      if repo_id.nil?
+        fail ArgumentError, 'invalid value for "repo_id", repo_id cannot be nil.'
+      end
+      @repo_id = repo_id
+    end
+
+    # Returns the object in the form of hash, with additionalProperties support.
+    # @return [Hash] Returns the object in the form of hash
+    # @!visibility private
+    def to_hash
+      hash = {}
+      self.class.attribute_map.each_pair do |attr, param|
+        value = self.send(attr)
+        if value.nil?
+          is_nullable = self.class.openapi_nullable.include?(attr)
+          next if !is_nullable || (is_nullable && !instance_variable_defined?(:"@#{attr}"))
+        end
+
+        hash[param] = _to_hash(value)
+      end
+      self.additional_properties.each_pair do |attr, value|
+        hash[attr] = value
+      end
+      hash
+    end
+
+    # Checks equality by comparing each attribute.
+    # @param o [Object] Object to be compared
+    # @!visibility private
+    def ==(o)
+      return true if self.equal?(o)
+      self.class == o.class &&
+          branch_name == o.branch_name &&
+          repo_id == o.repo_id &&
+          additional_properties == o.additional_properties
+    end
+
+    # Calculates hash code according to all attributes.
+    # @return [Integer] Hash code
+    # @!visibility private
+    def hash
+      [branch_name, repo_id, additional_properties].hash
+    end
+  end
+end
diff --git a/lib/datadog_api_client/v2/models/change_request_branch_create_data.rb b/lib/datadog_api_client/v2/models/change_request_branch_create_data.rb
new file mode 100644
index 00000000000..bed22639997
--- /dev/null
+++ b/lib/datadog_api_client/v2/models/change_request_branch_create_data.rb
@@ -0,0 +1,144 @@
+=begin
+#Datadog API V2 Collection
+
+#Collection of all Datadog Public endpoints.
+
+The version of the OpenAPI document: 1.0
+Contact: support@datadoghq.com
+Generated by: https://github.com/DataDog/datadog-api-client-ruby/tree/master/.generator
+
+ Unless explicitly stated otherwise all files in this repository are licensed under the Apache-2.0 License.
+ This product includes software developed at Datadog (https://www.datadoghq.com/).
+ Copyright 2020-Present Datadog, Inc.
+
+=end
+
+require 'date'
+require 'time'
+
+module DatadogAPIClient::V2
+  # Data object to create a change request branch.
+  class ChangeRequestBranchCreateData
+    include BaseGenericModel
+
+    # Attributes for creating a change request branch.
+    attr_reader :attributes
+
+    # Change request branch resource type.
+    attr_reader :type
+
+    attr_accessor :additional_properties
+
+    # Attribute mapping from ruby-style variable name to JSON key.
+    # @!visibility private
+    def self.attribute_map
+      {
+        :'attributes' => :'attributes',
+        :'type' => :'type'
+      }
+    end
+
+    # Attribute type mapping.
+    # @!visibility private
+    def self.openapi_types
+      {
+        :'attributes' => :'ChangeRequestBranchCreateAttributes',
+        :'type' => :'ChangeRequestBranchResourceType'
+      }
+    end
+
+    # Initializes the object
+    # @param attributes [Hash] Model attributes in the form of hash
+    # @!visibility private
+    def initialize(attributes = {})
+      if (!attributes.is_a?(Hash))
+        fail ArgumentError, "The input argument (attributes) must be a hash in `DatadogAPIClient::V2::ChangeRequestBranchCreateData` initialize method"
+      end
+
+      self.additional_properties = {}
+      # check to see if the attribute exists and convert string to symbol for hash key
+      attributes = attributes.each_with_object({}) { |(k, v), h|
+        if (!self.class.attribute_map.key?(k.to_sym))
+          self.additional_properties[k.to_sym] = v
+        else
+          h[k.to_sym] = v
+        end
+      }
+
+      if attributes.key?(:'attributes')
+        self.attributes = attributes[:'attributes']
+      end
+
+      if attributes.key?(:'type')
+        self.type = attributes[:'type']
+      end
+    end
+
+    # Check to see if the all the properties in the model are valid
+    # @return true if the model is valid
+    # @!visibility private
+    def valid?
+      return false if @attributes.nil?
+      return false if @type.nil?
+      true
+    end
+
+    # Custom attribute writer method with validation
+    # @param attributes [Object] Object to be assigned
+    # @!visibility private
+    def attributes=(attributes)
+      if attributes.nil?
+        fail ArgumentError, 'invalid value for "attributes", attributes cannot be nil.'
+      end
+      @attributes = attributes
+    end
+
+    # Custom attribute writer method with validation
+    # @param type [Object] Object to be assigned
+    # @!visibility private
+    def type=(type)
+      if type.nil?
+        fail ArgumentError, 'invalid value for "type", type cannot be nil.'
+      end
+      @type = type
+    end
+
+    # Returns the object in the form of hash, with additionalProperties support.
+    # @return [Hash] Returns the object in the form of hash
+    # @!visibility private
+    def to_hash
+      hash = {}
+      self.class.attribute_map.each_pair do |attr, param|
+        value = self.send(attr)
+        if value.nil?
+          is_nullable = self.class.openapi_nullable.include?(attr)
+          next if !is_nullable || (is_nullable && !instance_variable_defined?(:"@#{attr}"))
+        end
+
+        hash[param] = _to_hash(value)
+      end
+      self.additional_properties.each_pair do |attr, value|
+        hash[attr] = value
+      end
+      hash
+    end
+
+    # Checks equality by comparing each attribute.
+    # @param o [Object] Object to be compared
+    # @!visibility private
+    def ==(o)
+      return true if self.equal?(o)
+      self.class == o.class &&
+          attributes == o.attributes &&
+          type == o.type &&
+          additional_properties == o.additional_properties
+    end
+
+    # Calculates hash code according to all attributes.
+    # @return [Integer] Hash code
+    # @!visibility private
+    def hash
+      [attributes, type, additional_properties].hash
+    end
+  end
+end
diff --git a/lib/datadog_api_client/v2/models/change_request_branch_create_request.rb b/lib/datadog_api_client/v2/models/change_request_branch_create_request.rb
new file mode 100644
index 00000000000..e723023fc5a
--- /dev/null
+++ b/lib/datadog_api_client/v2/models/change_request_branch_create_request.rb
@@ -0,0 +1,123 @@
+=begin
+#Datadog API V2 Collection
+
+#Collection of all Datadog Public endpoints.
+
+The version of the OpenAPI document: 1.0
+Contact: support@datadoghq.com
+Generated by: https://github.com/DataDog/datadog-api-client-ruby/tree/master/.generator
+
+ Unless explicitly stated otherwise all files in this repository are licensed under the Apache-2.0 License.
+ This product includes software developed at Datadog (https://www.datadoghq.com/).
+ Copyright 2020-Present Datadog, Inc.
+
+=end
+
+require 'date'
+require 'time'
+
+module DatadogAPIClient::V2
+  # Request object to create a branch for a change request.
+  class ChangeRequestBranchCreateRequest
+    include BaseGenericModel
+
+    # Data object to create a change request branch.
+    attr_reader :data
+
+    attr_accessor :additional_properties
+
+    # Attribute mapping from ruby-style variable name to JSON key.
+    # @!visibility private
+    def self.attribute_map
+      {
+        :'data' => :'data'
+      }
+    end
+
+    # Attribute type mapping.
+    # @!visibility private
+    def self.openapi_types
+      {
+        :'data' => :'ChangeRequestBranchCreateData'
+      }
+    end
+
+    # Initializes the object
+    # @param attributes [Hash] Model attributes in the form of hash
+    # @!visibility private
+    def initialize(attributes = {})
+      if (!attributes.is_a?(Hash))
+        fail ArgumentError, "The input argument (attributes) must be a hash in `DatadogAPIClient::V2::ChangeRequestBranchCreateRequest` initialize method"
+      end
+
+      self.additional_properties = {}
+      # check to see if the attribute exists and convert string to symbol for hash key
+      attributes = attributes.each_with_object({}) { |(k, v), h|
+        if (!self.class.attribute_map.key?(k.to_sym))
+          self.additional_properties[k.to_sym] = v
+        else
+          h[k.to_sym] = v
+        end
+      }
+
+      if attributes.key?(:'data')
+        self.data = attributes[:'data']
+      end
+    end
+
+    # Check to see if the all the properties in the model are valid
+    # @return true if the model is valid
+    # @!visibility private
+    def valid?
+      return false if @data.nil?
+      true
+    end
+
+    # Custom attribute writer method with validation
+    # @param data [Object] Object to be assigned
+    # @!visibility private
+    def data=(data)
+      if data.nil?
+        fail ArgumentError, 'invalid value for "data", data cannot be nil.'
+      end
+      @data = data
+    end
+
+    # Returns the object in the form of hash, with additionalProperties support.
+    # @return [Hash] Returns the object in the form of hash
+    # @!visibility private
+    def to_hash
+      hash = {}
+      self.class.attribute_map.each_pair do |attr, param|
+        value = self.send(attr)
+        if value.nil?
+          is_nullable = self.class.openapi_nullable.include?(attr)
+          next if !is_nullable || (is_nullable && !instance_variable_defined?(:"@#{attr}"))
+        end
+
+        hash[param] = _to_hash(value)
+      end
+      self.additional_properties.each_pair do |attr, value|
+        hash[attr] = value
+      end
+      hash
+    end
+
+    # Checks equality by comparing each attribute.
+    # @param o [Object] Object to be compared
+    # @!visibility private
+    def ==(o)
+      return true if self.equal?(o)
+      self.class == o.class &&
+          data == o.data &&
+          additional_properties == o.additional_properties
+    end
+
+    # Calculates hash code according to all attributes.
+    # @return [Integer] Hash code
+    # @!visibility private
+    def hash
+      [data, additional_properties].hash
+    end
+  end
+end
diff --git a/lib/datadog_api_client/v2/models/change_request_branch_resource_type.rb b/lib/datadog_api_client/v2/models/change_request_branch_resource_type.rb
new file mode 100644
index 00000000000..ecbea77e982
--- /dev/null
+++ b/lib/datadog_api_client/v2/models/change_request_branch_resource_type.rb
@@ -0,0 +1,26 @@
+=begin
+#Datadog API V2 Collection
+
+#Collection of all Datadog Public endpoints.
+
+The version of the OpenAPI document: 1.0
+Contact: support@datadoghq.com
+Generated by: https://github.com/DataDog/datadog-api-client-ruby/tree/master/.generator
+
+ Unless explicitly stated otherwise all files in this repository are licensed under the Apache-2.0 License.
+ This product includes software developed at Datadog (https://www.datadoghq.com/).
+ Copyright 2020-Present Datadog, Inc.
+
+=end
+
+require 'date'
+require 'time'
+
+module DatadogAPIClient::V2
+  # Change request branch resource type.
+  class ChangeRequestBranchResourceType
+    include BaseEnumModel
+
+    CHANGE_REQUEST_BRANCH = "change_request_branch".freeze
+  end
+end
diff --git a/lib/datadog_api_client/v2/models/change_request_change_type.rb b/lib/datadog_api_client/v2/models/change_request_change_type.rb
new file mode 100644
index 00000000000..4c79a3ba55e
--- /dev/null
+++ b/lib/datadog_api_client/v2/models/change_request_change_type.rb
@@ -0,0 +1,28 @@
+=begin
+#Datadog API V2 Collection
+
+#Collection of all Datadog Public endpoints.
+
+The version of the OpenAPI document: 1.0
+Contact: support@datadoghq.com
+Generated by: https://github.com/DataDog/datadog-api-client-ruby/tree/master/.generator
+
+ Unless explicitly stated otherwise all files in this repository are licensed under the Apache-2.0 License.
+ This product includes software developed at Datadog (https://www.datadoghq.com/).
+ Copyright 2020-Present Datadog, Inc.
+
+=end
+
+require 'date'
+require 'time'
+
+module DatadogAPIClient::V2
+  # The type of the change request.
+  class ChangeRequestChangeType
+    include BaseEnumModel
+
+    NORMAL = "NORMAL".freeze
+    STANDARD = "STANDARD".freeze
+    EMERGENCY = "EMERGENCY".freeze
+  end
+end
diff --git a/lib/datadog_api_client/v2/models/change_request_create_attributes.rb b/lib/datadog_api_client/v2/models/change_request_create_attributes.rb
new file mode 100644
index 00000000000..14fd2580e2c
--- /dev/null
+++ b/lib/datadog_api_client/v2/models/change_request_create_attributes.rb
@@ -0,0 +1,225 @@
+=begin
+#Datadog API V2 Collection
+
+#Collection of all Datadog Public endpoints.
+
+The version of the OpenAPI document: 1.0
+Contact: support@datadoghq.com
+Generated by: https://github.com/DataDog/datadog-api-client-ruby/tree/master/.generator
+
+ Unless explicitly stated otherwise all files in this repository are licensed under the Apache-2.0 License.
+ This product includes software developed at Datadog (https://www.datadoghq.com/).
+ Copyright 2020-Present Datadog, Inc.
+
+=end
+
+require 'date'
+require 'time'
+
+module DatadogAPIClient::V2
+  # Attributes for creating a change request.
+  class ChangeRequestCreateAttributes
+    include BaseGenericModel
+
+    # The UUID of an incident to link to the change request.
+    attr_accessor :change_request_linked_incident_uuid
+
+    # The maintenance window query for the change request.
+    attr_accessor :change_request_maintenance_window_query
+
+    # The plan associated with the change request.
+    attr_accessor :change_request_plan
+
+    # The risk level of the change request.
+    attr_accessor :change_request_risk
+
+    # The type of the change request.
+    attr_accessor :change_request_type
+
+    # The description of the change request.
+    attr_accessor :description
+
+    # The planned end date of the change request.
+    attr_accessor :end_date
+
+    # The project UUID to associate with the change request.
+    attr_accessor :project_id
+
+    # A list of team handles to request decisions from.
+    attr_accessor :requested_teams
+
+    # The planned start date of the change request.
+    attr_accessor :start_date
+
+    # The title of the change request.
+    attr_reader :title
+
+    attr_accessor :additional_properties
+
+    # Attribute mapping from ruby-style variable name to JSON key.
+    # @!visibility private
+    def self.attribute_map
+      {
+        :'change_request_linked_incident_uuid' => :'change_request_linked_incident_uuid',
+        :'change_request_maintenance_window_query' => :'change_request_maintenance_window_query',
+        :'change_request_plan' => :'change_request_plan',
+        :'change_request_risk' => :'change_request_risk',
+        :'change_request_type' => :'change_request_type',
+        :'description' => :'description',
+        :'end_date' => :'end_date',
+        :'project_id' => :'project_id',
+        :'requested_teams' => :'requested_teams',
+        :'start_date' => :'start_date',
+        :'title' => :'title'
+      }
+    end
+
+    # Attribute type mapping.
+    # @!visibility private
+    def self.openapi_types
+      {
+        :'change_request_linked_incident_uuid' => :'String',
+        :'change_request_maintenance_window_query' => :'String',
+        :'change_request_plan' => :'String',
+        :'change_request_risk' => :'ChangeRequestRiskLevel',
+        :'change_request_type' => :'ChangeRequestChangeType',
+        :'description' => :'String',
+        :'end_date' => :'Time',
+        :'project_id' => :'String',
+        :'requested_teams' => :'Array<String>',
+        :'start_date' => :'Time',
+        :'title' => :'String'
+      }
+    end
+
+    # Initializes the object
+    # @param attributes [Hash] Model attributes in the form of hash
+    # @!visibility private
+    def initialize(attributes = {})
+      if (!attributes.is_a?(Hash))
+        fail ArgumentError, "The input argument (attributes) must be a hash in `DatadogAPIClient::V2::ChangeRequestCreateAttributes` initialize method"
+      end
+
+      self.additional_properties = {}
+      # check to see if the attribute exists and convert string to symbol for hash key
+      attributes = attributes.each_with_object({}) { |(k, v), h|
+        if (!self.class.attribute_map.key?(k.to_sym))
+          self.additional_properties[k.to_sym] = v
+        else
+          h[k.to_sym] = v
+        end
+      }
+
+      if attributes.key?(:'change_request_linked_incident_uuid')
+        self.change_request_linked_incident_uuid = attributes[:'change_request_linked_incident_uuid']
+      end
+
+      if attributes.key?(:'change_request_maintenance_window_query')
+        self.change_request_maintenance_window_query = attributes[:'change_request_maintenance_window_query']
+      end
+
+      if attributes.key?(:'change_request_plan')
+        self.change_request_plan = attributes[:'change_request_plan']
+      end
+
+      if attributes.key?(:'change_request_risk')
+        self.change_request_risk = attributes[:'change_request_risk']
+      end
+
+      if attributes.key?(:'change_request_type')
+        self.change_request_type = attributes[:'change_request_type']
+      end
+
+      if attributes.key?(:'description')
+        self.description = attributes[:'description']
+      end
+
+      if attributes.key?(:'end_date')
+        self.end_date = attributes[:'end_date']
+      end
+
+      if attributes.key?(:'project_id')
+        self.project_id = attributes[:'project_id']
+      end
+
+      if attributes.key?(:'requested_teams')
+        if (value = attributes[:'requested_teams']).is_a?(Array)
+          self.requested_teams = value
+        end
+      end
+
+      if attributes.key?(:'start_date')
+        self.start_date = attributes[:'start_date']
+      end
+
+      if attributes.key?(:'title')
+        self.title = attributes[:'title']
+      end
+    end
+
+    # Check to see if the all the properties in the model are valid
+    # @return true if the model is valid
+    # @!visibility private
+    def valid?
+      return false if @title.nil?
+      true
+    end
+
+    # Custom attribute writer method with validation
+    # @param title [Object] Object to be assigned
+    # @!visibility private
+    def title=(title)
+      if title.nil?
+        fail ArgumentError, 'invalid value for "title", title cannot be nil.'
+      end
+      @title = title
+    end
+
+    # Returns the object in the form of hash, with additionalProperties support.
+    # @return [Hash] Returns the object in the form of hash
+    # @!visibility private
+    def to_hash
+      hash = {}
+      self.class.attribute_map.each_pair do |attr, param|
+        value = self.send(attr)
+        if value.nil?
+          is_nullable = self.class.openapi_nullable.include?(attr)
+          next if !is_nullable || (is_nullable && !instance_variable_defined?(:"@#{attr}"))
+        end
+
+        hash[param] = _to_hash(value)
+      end
+      self.additional_properties.each_pair do |attr, value|
+        hash[attr] = value
+      end
+      hash
+    end
+
+    # Checks equality by comparing each attribute.
+    # @param o [Object] Object to be compared
+    # @!visibility private
+    def ==(o)
+      return true if self.equal?(o)
+      self.class == o.class &&
+          change_request_linked_incident_uuid == o.change_request_linked_incident_uuid &&
+          change_request_maintenance_window_query == o.change_request_maintenance_window_query &&
+          change_request_plan == o.change_request_plan &&
+          change_request_risk == o.change_request_risk &&
+          change_request_type == o.change_request_type &&
+          description == o.description &&
+          end_date == o.end_date &&
+          project_id == o.project_id &&
+          requested_teams == o.requested_teams &&
+          start_date == o.start_date &&
+          title == o.title &&
+          additional_properties == o.additional_properties
+    end
+
+    # Calculates hash code according to all attributes.
+    # @return [Integer] Hash code
+    # @!visibility private
+    def hash
+      [change_request_linked_incident_uuid, change_request_maintenance_window_query, change_request_plan, change_request_risk, change_request_type, description, end_date, project_id, requested_teams, start_date, title, additional_properties].hash
+    end
+  end
+end
diff --git a/lib/datadog_api_client/v2/models/change_request_create_data.rb b/lib/datadog_api_client/v2/models/change_request_create_data.rb
new file mode 100644
index 00000000000..113c6ab4a6f
--- /dev/null
+++ b/lib/datadog_api_client/v2/models/change_request_create_data.rb
@@ -0,0 +1,144 @@
+=begin
+#Datadog API V2 Collection
+
+#Collection of all Datadog Public endpoints.
+
+The version of the OpenAPI document: 1.0
+Contact: support@datadoghq.com
+Generated by: https://github.com/DataDog/datadog-api-client-ruby/tree/master/.generator
+
+ Unless explicitly stated otherwise all files in this repository are licensed under the Apache-2.0 License.
+ This product includes software developed at Datadog (https://www.datadoghq.com/).
+ Copyright 2020-Present Datadog, Inc.
+
+=end
+
+require 'date'
+require 'time'
+
+module DatadogAPIClient::V2
+  # Data object to create a change request.
+  class ChangeRequestCreateData
+    include BaseGenericModel
+
+    # Attributes for creating a change request.
+    attr_reader :attributes
+
+    # Change request resource type.
+    attr_reader :type
+
+    attr_accessor :additional_properties
+
+    # Attribute mapping from ruby-style variable name to JSON key.
+    # @!visibility private
+    def self.attribute_map
+      {
+        :'attributes' => :'attributes',
+        :'type' => :'type'
+      }
+    end
+
+    # Attribute type mapping.
+    # @!visibility private
+    def self.openapi_types
+      {
+        :'attributes' => :'ChangeRequestCreateAttributes',
+        :'type' => :'ChangeRequestResourceType'
+      }
+    end
+
+    # Initializes the object
+    # @param attributes [Hash] Model attributes in the form of hash
+    # @!visibility private
+    def initialize(attributes = {})
+      if (!attributes.is_a?(Hash))
+        fail ArgumentError, "The input argument (attributes) must be a hash in `DatadogAPIClient::V2::ChangeRequestCreateData` initialize method"
+      end
+
+      self.additional_properties = {}
+      # check to see if the attribute exists and convert string to symbol for hash key
+      attributes = attributes.each_with_object({}) { |(k, v), h|
+        if (!self.class.attribute_map.key?(k.to_sym))
+          self.additional_properties[k.to_sym] = v
+        else
+          h[k.to_sym] = v
+        end
+      }
+
+      if attributes.key?(:'attributes')
+        self.attributes = attributes[:'attributes']
+      end
+
+      if attributes.key?(:'type')
+        self.type = attributes[:'type']
+      end
+    end
+
+    # Check to see if the all the properties in the model are valid
+    # @return true if the model is valid
+    # @!visibility private
+    def valid?
+      return false if @attributes.nil?
+      return false if @type.nil?
+      true
+    end
+
+    # Custom attribute writer method with validation
+    # @param attributes [Object] Object to be assigned
+    # @!visibility private
+    def attributes=(attributes)
+      if attributes.nil?
+        fail ArgumentError, 'invalid value for "attributes", attributes cannot be nil.'
+      end
+      @attributes = attributes
+    end
+
+    # Custom attribute writer method with validation
+    # @param type [Object] Object to be assigned
+    # @!visibility private
+    def type=(type)
+      if type.nil?
+        fail ArgumentError, 'invalid value for "type", type cannot be nil.'
+      end
+      @type = type
+    end
+
+    # Returns the object in the form of hash, with additionalProperties support.
+    # @return [Hash] Returns the object in the form of hash
+    # @!visibility private
+    def to_hash
+      hash = {}
+      self.class.attribute_map.each_pair do |attr, param|
+        value = self.send(attr)
+        if value.nil?
+          is_nullable = self.class.openapi_nullable.include?(attr)
+          next if !is_nullable || (is_nullable && !instance_variable_defined?(:"@#{attr}"))
+        end
+
+        hash[param] = _to_hash(value)
+      end
+      self.additional_properties.each_pair do |attr, value|
+        hash[attr] = value
+      end
+      hash
+    end
+
+    # Checks equality by comparing each attribute.
+    # @param o [Object] Object to be compared
+    # @!visibility private
+    def ==(o)
+      return true if self.equal?(o)
+      self.class == o.class &&
+          attributes == o.attributes &&
+          type == o.type &&
+          additional_properties == o.additional_properties
+    end
+
+    # Calculates hash code according to all attributes.
+    # @return [Integer] Hash code
+    # @!visibility private
+    def hash
+      [attributes, type, additional_properties].hash
+    end
+  end
+end
diff --git a/lib/datadog_api_client/v2/models/change_request_create_request.rb b/lib/datadog_api_client/v2/models/change_request_create_request.rb
new file mode 100644
index 00000000000..11af53fddcc
--- /dev/null
+++ b/lib/datadog_api_client/v2/models/change_request_create_request.rb
@@ -0,0 +1,123 @@
+=begin
+#Datadog API V2 Collection
+
+#Collection of all Datadog Public endpoints.
+
+The version of the OpenAPI document: 1.0
+Contact: support@datadoghq.com
+Generated by: https://github.com/DataDog/datadog-api-client-ruby/tree/master/.generator
+
+ Unless explicitly stated otherwise all files in this repository are licensed under the Apache-2.0 License.
+ This product includes software developed at Datadog (https://www.datadoghq.com/).
+ Copyright 2020-Present Datadog, Inc.
+
+=end
+
+require 'date'
+require 'time'
+
+module DatadogAPIClient::V2
+  # Request object to create a change request.
+  class ChangeRequestCreateRequest
+    include BaseGenericModel
+
+    # Data object to create a change request.
+    attr_reader :data
+
+    attr_accessor :additional_properties
+
+    # Attribute mapping from ruby-style variable name to JSON key.
+    # @!visibility private
+    def self.attribute_map
+      {
+        :'data' => :'data'
+      }
+    end
+
+    # Attribute type mapping.
+    # @!visibility private
+    def self.openapi_types
+      {
+        :'data' => :'ChangeRequestCreateData'
+      }
+    end
+
+    # Initializes the object
+    # @param attributes [Hash] Model attributes in the form of hash
+    # @!visibility private
+    def initialize(attributes = {})
+      if (!attributes.is_a?(Hash))
+        fail ArgumentError, "The input argument (attributes) must be a hash in `DatadogAPIClient::V2::ChangeRequestCreateRequest` initialize method"
+      end
+
+      self.additional_properties = {}
+      # check to see if the attribute exists and convert string to symbol for hash key
+      attributes = attributes.each_with_object({}) { |(k, v), h|
+        if (!self.class.attribute_map.key?(k.to_sym))
+          self.additional_properties[k.to_sym] = v
+        else
+          h[k.to_sym] = v
+        end
+      }
+
+      if attributes.key?(:'data')
+        self.data = attributes[:'data']
+      end
+    end
+
+    # Check to see if the all the properties in the model are valid
+    # @return true if the model is valid
+    # @!visibility private
+    def valid?
+      return false if @data.nil?
+      true
+    end
+
+    # Custom attribute writer method with validation
+    # @param data [Object] Object to be assigned
+    # @!visibility private
+    def data=(data)
+      if data.nil?
+        fail ArgumentError, 'invalid value for "data", data cannot be nil.'
+      end
+      @data = data
+    end
+
+    # Returns the object in the form of hash, with additionalProperties support.
+    # @return [Hash] Returns the object in the form of hash
+    # @!visibility private
+    def to_hash
+      hash = {}
+      self.class.attribute_map.each_pair do |attr, param|
+        value = self.send(attr)
+        if value.nil?
+          is_nullable = self.class.openapi_nullable.include?(attr)
+          next if !is_nullable || (is_nullable && !instance_variable_defined?(:"@#{attr}"))
+        end
+
+        hash[param] = _to_hash(value)
+      end
+      self.additional_properties.each_pair do |attr, value|
+        hash[attr] = value
+      end
+      hash
+    end
+
+    # Checks equality by comparing each attribute.
+    # @param o [Object] Object to be compared
+    # @!visibility private
+    def ==(o)
+      return true if self.equal?(o)
+      self.class == o.class &&
+          data == o.data &&
+          additional_properties == o.additional_properties
+    end
+
+    # Calculates hash code according to all attributes.
+    # @return [Integer] Hash code
+    # @!visibility private
+    def hash
+      [data, additional_properties].hash
+    end
+  end
+end
diff --git a/lib/datadog_api_client/v2/models/change_request_decision_create_attributes.rb b/lib/datadog_api_client/v2/models/change_request_decision_create_attributes.rb
new file mode 100644
index 00000000000..5920896e157
--- /dev/null
+++ b/lib/datadog_api_client/v2/models/change_request_decision_create_attributes.rb
@@ -0,0 +1,115 @@
+=begin
+#Datadog API V2 Collection
+
+#Collection of all Datadog Public endpoints.
+
+The version of the OpenAPI document: 1.0
+Contact: support@datadoghq.com
+Generated by: https://github.com/DataDog/datadog-api-client-ruby/tree/master/.generator
+
+ Unless explicitly stated otherwise all files in this repository are licensed under the Apache-2.0 License.
+ This product includes software developed at Datadog (https://www.datadoghq.com/).
+ Copyright 2020-Present Datadog, Inc.
+
+=end
+
+require 'date'
+require 'time'
+
+module DatadogAPIClient::V2
+  # Attributes for creating a change request decision.
+  class ChangeRequestDecisionCreateAttributes
+    include BaseGenericModel
+
+    # The status of a change request decision.
+    attr_accessor :change_request_status
+
+    # The reason for requesting the decision.
+    attr_accessor :request_reason
+
+    attr_accessor :additional_properties
+
+    # Attribute mapping from ruby-style variable name to JSON key.
+    # @!visibility private
+    def self.attribute_map
+      {
+        :'change_request_status' => :'change_request_status',
+        :'request_reason' => :'request_reason'
+      }
+    end
+
+    # Attribute type mapping.
+    # @!visibility private
+    def self.openapi_types
+      {
+        :'change_request_status' => :'ChangeRequestDecisionStatusType',
+        :'request_reason' => :'String'
+      }
+    end
+
+    # Initializes the object
+    # @param attributes [Hash] Model attributes in the form of hash
+    # @!visibility private
+    def initialize(attributes = {})
+      if (!attributes.is_a?(Hash))
+        fail ArgumentError, "The input argument (attributes) must be a hash in `DatadogAPIClient::V2::ChangeRequestDecisionCreateAttributes` initialize method"
+      end
+
+      self.additional_properties = {}
+      # check to see if the attribute exists and convert string to symbol for hash key
+      attributes = attributes.each_with_object({}) { |(k, v), h|
+        if (!self.class.attribute_map.key?(k.to_sym))
+          self.additional_properties[k.to_sym] = v
+        else
+          h[k.to_sym] = v
+        end
+      }
+
+      if attributes.key?(:'change_request_status')
+        self.change_request_status = attributes[:'change_request_status']
+      end
+
+      if attributes.key?(:'request_reason')
+        self.request_reason = attributes[:'request_reason']
+      end
+    end
+
+    # Returns the object in the form of hash, with additionalProperties support.
+    # @return [Hash] Returns the object in the form of hash
+    # @!visibility private
+    def to_hash
+      hash = {}
+      self.class.attribute_map.each_pair do |attr, param|
+        value = self.send(attr)
+        if value.nil?
+          is_nullable = self.class.openapi_nullable.include?(attr)
+          next if !is_nullable || (is_nullable && !instance_variable_defined?(:"@#{attr}"))
+        end
+
+        hash[param] = _to_hash(value)
+      end
+      self.additional_properties.each_pair do |attr, value|
+        hash[attr] = value
+      end
+      hash
+    end
+
+    # Checks equality by comparing each attribute.
+    # @param o [Object] Object to be compared
+    # @!visibility private
+    def ==(o)
+      return true if self.equal?(o)
+      self.class == o.class &&
+          change_request_status == o.change_request_status &&
+          request_reason == o.request_reason &&
+          additional_properties == o.additional_properties
+    end
+
+    # Calculates hash code according to all attributes.
+    # @return [Integer] Hash code
+    # @!visibility private
+    def hash
+      [change_request_status, request_reason, additional_properties].hash
+    end
+  end
+end
diff --git a/lib/datadog_api_client/v2/models/change_request_decision_create_item.rb b/lib/datadog_api_client/v2/models/change_request_decision_create_item.rb
new file mode 100644
index 00000000000..30da753cf6d
--- /dev/null
+++ b/lib/datadog_api_client/v2/models/change_request_decision_create_item.rb
@@ -0,0 +1,164 @@
+=begin
+#Datadog API V2 Collection
+
+#Collection of all Datadog Public endpoints.
+
+The version of the OpenAPI document: 1.0
+Contact: support@datadoghq.com
+Generated by: https://github.com/DataDog/datadog-api-client-ruby/tree/master/.generator
+
+ Unless explicitly stated otherwise all files in this repository are licensed under the Apache-2.0 License.
+ This product includes software developed at Datadog (https://www.datadoghq.com/).
+ Copyright 2020-Present Datadog, Inc.
+
+=end
+
+require 'date'
+require 'time'
+
+module DatadogAPIClient::V2
+  # An included change request decision for a create or update operation.
+  class ChangeRequestDecisionCreateItem
+    include BaseGenericModel
+
+    # Attributes for creating a change request decision.
+    attr_accessor :attributes
+
+    # The decision identifier.
+    attr_reader :id
+
+    # Relationships for creating a change request decision.
+    attr_accessor :relationships
+
+    # Change request decision resource type.
+    attr_reader :type
+
+    attr_accessor :additional_properties
+
+    # Attribute mapping from ruby-style variable name to JSON key.
+    # @!visibility private
+    def self.attribute_map
+      {
+        :'attributes' => :'attributes',
+        :'id' => :'id',
+        :'relationships' => :'relationships',
+        :'type' => :'type'
+      }
+    end
+
+    # Attribute type mapping.
+    # @!visibility private
+    def self.openapi_types
+      {
+        :'attributes' => :'ChangeRequestDecisionCreateAttributes',
+        :'id' => :'String',
+        :'relationships' => :'ChangeRequestDecisionCreateRelationships',
+        :'type' => :'ChangeRequestDecisionResourceType'
+      }
+    end
+
+    # Initializes the object
+    # @param attributes [Hash] Model attributes in the form of hash
+    # @!visibility private
+    def initialize(attributes = {})
+      if (!attributes.is_a?(Hash))
+        fail ArgumentError, "The input argument (attributes) must be a hash in `DatadogAPIClient::V2::ChangeRequestDecisionCreateItem` initialize method"
+      end
+
+      self.additional_properties = {}
+      # check to see if the attribute exists and convert string to symbol for hash key
+      attributes = attributes.each_with_object({}) { |(k, v), h|
+        if (!self.class.attribute_map.key?(k.to_sym))
+          self.additional_properties[k.to_sym] = v
+        else
+          h[k.to_sym] = v
+        end
+      }
+
+      if attributes.key?(:'attributes')
+        self.attributes = attributes[:'attributes']
+      end
+
+      if attributes.key?(:'id')
+        self.id = attributes[:'id']
+      end
+
+      if attributes.key?(:'relationships')
+        self.relationships = attributes[:'relationships']
+      end
+
+      if attributes.key?(:'type')
+        self.type = attributes[:'type']
+      end
+    end
+
+    # Check to see if the all the properties in the model are valid
+    # @return true if the model is valid
+    # @!visibility private
+    def valid?
+      return false if @id.nil?
+      return false if @type.nil?
+      true
+    end
+
+    # Custom attribute writer method with validation
+    # @param id [Object] Object to be assigned
+    # @!visibility private
+    def id=(id)
+      if id.nil?
+        fail ArgumentError, 'invalid value for "id", id cannot be nil.'
+      end
+      @id = id
+    end
+
+    # Custom attribute writer method with validation
+    # @param type [Object] Object to be assigned
+    # @!visibility private
+    def type=(type)
+      if type.nil?
+        fail ArgumentError, 'invalid value for "type", type cannot be nil.'
+      end
+      @type = type
+    end
+
+    # Returns the object in the form of hash, with additionalProperties support.
+    # @return [Hash] Returns the object in the form of hash
+    # @!visibility private
+    def to_hash
+      hash = {}
+      self.class.attribute_map.each_pair do |attr, param|
+        value = self.send(attr)
+        if value.nil?
+          is_nullable = self.class.openapi_nullable.include?(attr)
+          next if !is_nullable || (is_nullable && !instance_variable_defined?(:"@#{attr}"))
+        end
+
+        hash[param] = _to_hash(value)
+      end
+      self.additional_properties.each_pair do |attr, value|
+        hash[attr] = value
+      end
+      hash
+    end
+
+    # Checks equality by comparing each attribute.
+    # @param o [Object] Object to be compared
+    # @!visibility private
+    def ==(o)
+      return true if self.equal?(o)
+      self.class == o.class &&
+          attributes == o.attributes &&
+          id == o.id &&
+          relationships == o.relationships &&
+          type == o.type &&
+          additional_properties == o.additional_properties
+    end
+
+    # Calculates hash code according to all attributes.
+    # @return [Integer] Hash code
+    # @!visibility private
+    def hash
+      [attributes, id, relationships, type, additional_properties].hash
+    end
+  end
+end
diff --git a/lib/datadog_api_client/v2/models/change_request_decision_create_relationships.rb b/lib/datadog_api_client/v2/models/change_request_decision_create_relationships.rb
new file mode 100644
index 00000000000..c287f9bab82
--- /dev/null
+++ b/lib/datadog_api_client/v2/models/change_request_decision_create_relationships.rb
@@ -0,0 +1,105 @@
+=begin
+#Datadog API V2 Collection
+
+#Collection of all Datadog Public endpoints.
+
+The version of the OpenAPI document: 1.0
+Contact: support@datadoghq.com
+Generated by: https://github.com/DataDog/datadog-api-client-ruby/tree/master/.generator
+
+ Unless explicitly stated otherwise all files in this repository are licensed under the Apache-2.0 License.
+ This product includes software developed at Datadog (https://www.datadoghq.com/).
+ Copyright 2020-Present Datadog, Inc.
+
+=end
+
+require 'date'
+require 'time'
+
+module DatadogAPIClient::V2
+  # Relationships for creating a change request decision.
+  class ChangeRequestDecisionCreateRelationships
+    include BaseGenericModel
+
+    # Relationship to a user.
+    attr_accessor :requested_user
+
+    attr_accessor :additional_properties
+
+    # Attribute mapping from ruby-style variable name to JSON key.
+    # @!visibility private
+    def self.attribute_map
+      {
+        :'requested_user' => :'requested_user'
+      }
+    end
+
+    # Attribute type mapping.
+    # @!visibility private
+    def self.openapi_types
+      {
+        :'requested_user' => :'ChangeRequestUserRelationship'
+      }
+    end
+
+    # Initializes the object
+    # @param attributes [Hash] Model attributes in the form of hash
+    # @!visibility private
+    def initialize(attributes = {})
+      if (!attributes.is_a?(Hash))
+        fail ArgumentError, "The input argument (attributes) must be a hash in `DatadogAPIClient::V2::ChangeRequestDecisionCreateRelationships` initialize method"
+      end
+
+      self.additional_properties = {}
+      # check to see if the attribute exists and convert string to symbol for hash key
+      attributes = attributes.each_with_object({}) { |(k, v), h|
+        if (!self.class.attribute_map.key?(k.to_sym))
+          self.additional_properties[k.to_sym] = v
+        else
+          h[k.to_sym] = v
+        end
+      }
+
+      if attributes.key?(:'requested_user')
+        self.requested_user = attributes[:'requested_user']
+      end
+    end
+
+    # Returns the object in the form of hash, with additionalProperties support.
+    # @return [Hash] Returns the object in the form of hash
+    # @!visibility private
+    def to_hash
+      hash = {}
+      self.class.attribute_map.each_pair do |attr, param|
+        value = self.send(attr)
+        if value.nil?
+          is_nullable = self.class.openapi_nullable.include?(attr)
+          next if !is_nullable || (is_nullable && !instance_variable_defined?(:"@#{attr}"))
+        end
+
+        hash[param] = _to_hash(value)
+      end
+      self.additional_properties.each_pair do |attr, value|
+        hash[attr] = value
+      end
+      hash
+    end
+
+    # Checks equality by comparing each attribute.
+    # @param o [Object] Object to be compared
+    # @!visibility private
+    def ==(o)
+      return true if self.equal?(o)
+      self.class == o.class &&
+          requested_user == o.requested_user &&
+          additional_properties == o.additional_properties
+    end
+
+    # Calculates hash code according to all attributes.
+    # @return [Integer] Hash code
+    # @!visibility private
+    def hash
+      [requested_user, additional_properties].hash
+    end
+  end
+end
diff --git a/lib/datadog_api_client/v2/models/change_request_decision_relationship_data.rb b/lib/datadog_api_client/v2/models/change_request_decision_relationship_data.rb
new file mode 100644
index 00000000000..305f11a6c22
--- /dev/null
+++ b/lib/datadog_api_client/v2/models/change_request_decision_relationship_data.rb
@@ -0,0 +1,144 @@
+=begin
+#Datadog API V2 Collection
+
+#Collection of all Datadog Public endpoints.
+
+The version of the OpenAPI document: 1.0
+Contact: support@datadoghq.com
+Generated by: https://github.com/DataDog/datadog-api-client-ruby/tree/master/.generator
+
+ Unless explicitly stated otherwise all files in this repository are licensed under the Apache-2.0 License.
+ This product includes software developed at Datadog (https://www.datadoghq.com/).
+ Copyright 2020-Present Datadog, Inc.
+
+=end
+
+require 'date'
+require 'time'
+
+module DatadogAPIClient::V2
+  # Change request decision relationship data.
+  class ChangeRequestDecisionRelationshipData
+    include BaseGenericModel
+
+    # The decision UUID.
+    attr_reader :id
+
+    # Change request decision resource type.
+    attr_reader :type
+
+    attr_accessor :additional_properties
+
+    # Attribute mapping from ruby-style variable name to JSON key.
+    # @!visibility private
+    def self.attribute_map
+      {
+        :'id' => :'id',
+        :'type' => :'type'
+      }
+    end
+
+    # Attribute type mapping.
+    # @!visibility private
+    def self.openapi_types
+      {
+        :'id' => :'String',
+        :'type' => :'ChangeRequestDecisionResourceType'
+      }
+    end
+
+    # Initializes the object
+    # @param attributes [Hash] Model attributes in the form of hash
+    # @!visibility private
+    def initialize(attributes = {})
+      if (!attributes.is_a?(Hash))
+        fail ArgumentError, "The input argument (attributes) must be a hash in `DatadogAPIClient::V2::ChangeRequestDecisionRelationshipData` initialize method"
+      end
+
+      self.additional_properties = {}
+      # check to see if the attribute exists and convert string to symbol for hash key
+      attributes = attributes.each_with_object({}) { |(k, v), h|
+        if (!self.class.attribute_map.key?(k.to_sym))
+          self.additional_properties[k.to_sym] = v
+        else
+          h[k.to_sym] = v
+        end
+      }
+
+      if attributes.key?(:'id')
+        self.id = attributes[:'id']
+      end
+
+      if attributes.key?(:'type')
+        self.type = attributes[:'type']
+      end
+    end
+
+    # Check to see if the all the properties in the model are valid
+    # @return true if the model is valid
+    # @!visibility private
+    def valid?
+      return false if @id.nil?
+      return false if @type.nil?
+      true
+    end
+
+    # Custom attribute writer method with validation
+    # @param id [Object] Object to be assigned
+    # @!visibility private
+    def id=(id)
+      if id.nil?
+        fail ArgumentError, 'invalid value for "id", id cannot be nil.'
+      end
+      @id = id
+    end
+
+    # Custom attribute writer method with validation
+    # @param type [Object] Object to be assigned
+    # @!visibility private
+    def type=(type)
+      if type.nil?
+        fail ArgumentError, 'invalid value for "type", type cannot be nil.'
+      end
+      @type = type
+    end
+
+    # Returns the object in the form of hash, with additionalProperties support.
+    # @return [Hash] Returns the object in the form of hash
+    # @!visibility private
+    def to_hash
+      hash = {}
+      self.class.attribute_map.each_pair do |attr, param|
+        value = self.send(attr)
+        if value.nil?
+          is_nullable = self.class.openapi_nullable.include?(attr)
+          next if !is_nullable || (is_nullable && !instance_variable_defined?(:"@#{attr}"))
+        end
+
+        hash[param] = _to_hash(value)
+      end
+      self.additional_properties.each_pair do |attr, value|
+        hash[attr] = value
+      end
+      hash
+    end
+
+    # Checks equality by comparing each attribute.
+    # @param o [Object] Object to be compared
+    # @!visibility private
+    def ==(o)
+      return true if self.equal?(o)
+      self.class == o.class &&
+          id == o.id &&
+          type == o.type &&
+          additional_properties == o.additional_properties
+    end
+
+    # Calculates hash code according to all attributes.
+    # @return [Integer] Hash code
+    # @!visibility private
+    def hash
+      [id, type, additional_properties].hash
+    end
+  end
+end
diff --git a/lib/datadog_api_client/v2/models/change_request_decision_relationships.rb b/lib/datadog_api_client/v2/models/change_request_decision_relationships.rb
new file mode 100644
index 00000000000..631468ad37d
--- /dev/null
+++ b/lib/datadog_api_client/v2/models/change_request_decision_relationships.rb
@@ -0,0 +1,165 @@
+=begin
+#Datadog API V2 Collection
+
+#Collection of all Datadog Public endpoints.
+
+The version of the OpenAPI document: 1.0
+Contact: support@datadoghq.com
+Generated by: https://github.com/DataDog/datadog-api-client-ruby/tree/master/.generator
+
+ Unless explicitly stated otherwise all files in this repository are licensed under the Apache-2.0 License.
+ This product includes software developed at Datadog (https://www.datadoghq.com/).
+ Copyright 2020-Present Datadog, Inc.
+
+=end
+
+require 'date'
+require 'time'
+
+module DatadogAPIClient::V2
+  # Relationships of a change request decision.
+  class ChangeRequestDecisionRelationships
+    include BaseGenericModel
+
+    # Relationship to a user.
+    attr_reader :modified_by
+
+    # Relationship to a user.
+    attr_reader :requested_by_user
+
+    # Relationship to a user.
+    attr_reader :requested_user
+
+    attr_accessor :additional_properties
+
+    # Attribute mapping from ruby-style variable name to JSON key.
+    # @!visibility private
+    def self.attribute_map
+      {
+        :'modified_by' => :'modified_by',
+        :'requested_by_user' => :'requested_by_user',
+        :'requested_user' => :'requested_user'
+      }
+    end
+
+    # Attribute type mapping.
+    # @!visibility private
+    def self.openapi_types
+      {
+        :'modified_by' => :'ChangeRequestUserRelationship',
+        :'requested_by_user' => :'ChangeRequestUserRelationship',
+        :'requested_user' => :'ChangeRequestUserRelationship'
+      }
+    end
+
+    # Initializes the object
+    # @param attributes [Hash] Model attributes in the form of hash
+    # @!visibility private
+    def initialize(attributes = {})
+      if (!attributes.is_a?(Hash))
+        fail ArgumentError, "The input argument (attributes) must be a hash in `DatadogAPIClient::V2::ChangeRequestDecisionRelationships` initialize method"
+      end
+
+      self.additional_properties = {}
+      # check to see if the attribute exists and convert string to symbol for hash key
+      attributes = attributes.each_with_object({}) { |(k, v), h|
+        if (!self.class.attribute_map.key?(k.to_sym))
+          self.additional_properties[k.to_sym] = v
+        else
+          h[k.to_sym] = v
+        end
+      }
+
+      if attributes.key?(:'modified_by')
+        self.modified_by = attributes[:'modified_by']
+      end
+
+      if attributes.key?(:'requested_by_user')
+        self.requested_by_user = attributes[:'requested_by_user']
+      end
+
+      if attributes.key?(:'requested_user')
+        self.requested_user = attributes[:'requested_user']
+      end
+    end
+
+    # Check to see if the all the properties in the model are valid
+    # @return true if the model is valid
+    # @!visibility private
+    def valid?
+      return false if @modified_by.nil?
+      return false if @requested_by_user.nil?
+      return false if @requested_user.nil?
+      true
+    end
+
+    # Custom attribute writer method with validation
+    # @param modified_by [Object] Object to be assigned
+    # @!visibility private
+    def modified_by=(modified_by)
+      if modified_by.nil?
+        fail ArgumentError, 'invalid value for "modified_by", modified_by cannot be nil.'
+      end
+      @modified_by = modified_by
+    end
+
+    # Custom attribute writer method with validation
+    # @param requested_by_user [Object] Object to be assigned
+    # @!visibility private
+    def requested_by_user=(requested_by_user)
+      if requested_by_user.nil?
+        fail ArgumentError, 'invalid value for "requested_by_user", requested_by_user cannot be nil.'
+      end
+      @requested_by_user = requested_by_user
+    end
+
+    # Custom attribute writer method with validation
+    # @param requested_user [Object] Object to be assigned
+    # @!visibility private
+    def requested_user=(requested_user)
+      if requested_user.nil?
+        fail ArgumentError, 'invalid value for "requested_user", requested_user cannot be nil.'
+      end
+      @requested_user = requested_user
+    end
+
+    # Returns the object in the form of hash, with additionalProperties support.
+    # @return [Hash] Returns the object in the form of hash
+    # @!visibility private
+    def to_hash
+      hash = {}
+      self.class.attribute_map.each_pair do |attr, param|
+        value = self.send(attr)
+        if value.nil?
+          is_nullable = self.class.openapi_nullable.include?(attr)
+          next if !is_nullable || (is_nullable && !instance_variable_defined?(:"@#{attr}"))
+        end
+
+        hash[param] = _to_hash(value)
+      end
+      self.additional_properties.each_pair do |attr, value|
+        hash[attr] = value
+      end
+      hash
+    end
+
+    # Checks equality by comparing each attribute.
+    # @param o [Object] Object to be compared
+    # @!visibility private
+    def ==(o)
+      return true if self.equal?(o)
+      self.class == o.class &&
+          modified_by == o.modified_by &&
+          requested_by_user == o.requested_by_user &&
+          requested_user == o.requested_user &&
+          additional_properties == o.additional_properties
+    end
+
+    # Calculates hash code according to all attributes.
+    # @return [Integer] Hash code
+    # @!visibility private
+    def hash
+      [modified_by, requested_by_user, requested_user, additional_properties].hash
+    end
+  end
+end
diff --git a/lib/datadog_api_client/v2/models/change_request_decision_resource_type.rb b/lib/datadog_api_client/v2/models/change_request_decision_resource_type.rb
new file mode 100644
index 00000000000..d9d63fe42a6
--- /dev/null
+++ b/lib/datadog_api_client/v2/models/change_request_decision_resource_type.rb
@@ -0,0 +1,26 @@
+=begin
+#Datadog API V2 Collection
+
+#Collection of all Datadog Public endpoints.
+
+The version of the OpenAPI document: 1.0
+Contact: support@datadoghq.com
+Generated by: https://github.com/DataDog/datadog-api-client-ruby/tree/master/.generator
+
+ Unless explicitly stated otherwise all files in this repository are licensed under the Apache-2.0 License.
+ This product includes software developed at Datadog (https://www.datadoghq.com/).
+ Copyright 2020-Present Datadog, Inc.
+
+=end
+
+require 'date'
+require 'time'
+
+module DatadogAPIClient::V2
+  # Change request decision resource type.
+  class ChangeRequestDecisionResourceType
+    include BaseEnumModel
+
+    CHANGE_REQUEST_DECISION = "change_request_decision".freeze
+  end
+end
diff --git a/lib/datadog_api_client/v2/models/change_request_decision_response_attributes.rb b/lib/datadog_api_client/v2/models/change_request_decision_response_attributes.rb
new file mode 100644
index 00000000000..707946b7ba0
--- /dev/null
+++ b/lib/datadog_api_client/v2/models/change_request_decision_response_attributes.rb
@@ -0,0 +1,228 @@
+=begin
+#Datadog API V2 Collection
+
+#Collection of all Datadog Public endpoints.
+
+The version of the OpenAPI document: 1.0
+Contact: support@datadoghq.com
+Generated by: https://github.com/DataDog/datadog-api-client-ruby/tree/master/.generator
+
+ Unless explicitly stated otherwise all files in this repository are licensed under the Apache-2.0 License.
+ This product includes software developed at Datadog (https://www.datadoghq.com/).
+ Copyright 2020-Present Datadog, Inc.
+
+=end
+
+require 'date'
+require 'time'
+
+module DatadogAPIClient::V2
+  # Attributes of a change request decision in a response.
+  class ChangeRequestDecisionResponseAttributes
+    include BaseGenericModel
+
+    # The status of a change request decision.
+    attr_reader :change_request_status
+
+    # Timestamp of when the decision was made.
+    attr_reader :decided_at
+
+    # The reason for the decision.
+    attr_reader :decision_reason
+
+    # Timestamp of when the decision was deleted.
+    attr_reader :deleted_at
+
+    # The reason for requesting the decision.
+    attr_reader :request_reason
+
+    # Timestamp of when the decision was requested.
+    attr_reader :requested_at
+
+    attr_accessor :additional_properties
+
+    # Attribute mapping from ruby-style variable name to JSON key.
+    # @!visibility private
+    def self.attribute_map
+      {
+        :'change_request_status' => :'change_request_status',
+        :'decided_at' => :'decided_at',
+        :'decision_reason' => :'decision_reason',
+        :'deleted_at' => :'deleted_at',
+        :'request_reason' => :'request_reason',
+        :'requested_at' => :'requested_at'
+      }
+    end
+
+    # Attribute type mapping.
+    # @!visibility private
+    def self.openapi_types
+      {
+        :'change_request_status' => :'ChangeRequestDecisionStatusType',
+        :'decided_at' => :'Time',
+        :'decision_reason' => :'String',
+        :'deleted_at' => :'Time',
+        :'request_reason' => :'String',
+        :'requested_at' => :'Time'
+      }
+    end
+
+    # Initializes the object
+    # @param attributes [Hash] Model attributes in the form of hash
+    # @!visibility private
+    def initialize(attributes = {})
+      if (!attributes.is_a?(Hash))
+        fail ArgumentError, "The input argument (attributes) must be a hash in `DatadogAPIClient::V2::ChangeRequestDecisionResponseAttributes` initialize method"
+      end
+
+      self.additional_properties = {}
+      # check to see if the attribute exists and convert string to symbol for hash key
+      attributes = attributes.each_with_object({}) { |(k, v), h|
+        if (!self.class.attribute_map.key?(k.to_sym))
+          self.additional_properties[k.to_sym] = v
+        else
+          h[k.to_sym] = v
+        end
+      }
+
+      if attributes.key?(:'change_request_status')
+        self.change_request_status = attributes[:'change_request_status']
+      end
+
+      if attributes.key?(:'decided_at')
+        self.decided_at = attributes[:'decided_at']
+      end
+
+      if attributes.key?(:'decision_reason')
+        self.decision_reason = attributes[:'decision_reason']
+      end
+
+      if attributes.key?(:'deleted_at')
+        self.deleted_at = attributes[:'deleted_at']
+      end
+
+      if attributes.key?(:'request_reason')
+        self.request_reason = attributes[:'request_reason']
+      end
+
+      if attributes.key?(:'requested_at')
+        self.requested_at = attributes[:'requested_at']
+      end
+    end
+
+    # Check to see if the all the properties in the model are valid
+    # @return true if the model is valid
+    # @!visibility private
+    def valid?
+      return false if @change_request_status.nil?
+      return false if @decided_at.nil?
+      return false if @decision_reason.nil?
+      return false if @deleted_at.nil?
+      return false if @request_reason.nil?
+      return false if @requested_at.nil?
+      true
+    end
+
+    # Custom attribute writer method with validation
+    # @param change_request_status [Object] Object to be assigned
+    # @!visibility private
+    def change_request_status=(change_request_status)
+      if change_request_status.nil?
+        fail ArgumentError, 'invalid value for "change_request_status", change_request_status cannot be nil.'
+      end
+      @change_request_status = change_request_status
+    end
+
+    # Custom attribute writer method with validation
+    # @param decided_at [Object] Object to be assigned
+    # @!visibility private
+    def decided_at=(decided_at)
+      if decided_at.nil?
+        fail ArgumentError, 'invalid value for "decided_at", decided_at cannot be nil.'
+      end
+      @decided_at = decided_at
+    end
+
+    # Custom attribute writer method with validation
+    # @param decision_reason [Object] Object to be assigned
+    # @!visibility private
+    def decision_reason=(decision_reason)
+      if decision_reason.nil?
+        fail ArgumentError, 'invalid value for "decision_reason", decision_reason cannot be nil.'
+      end
+      @decision_reason = decision_reason
+    end
+
+    # Custom attribute writer method with validation
+    # @param deleted_at [Object] Object to be assigned
+    # @!visibility private
+    def deleted_at=(deleted_at)
+      if deleted_at.nil?
+        fail ArgumentError, 'invalid value for "deleted_at", deleted_at cannot be nil.'
+      end
+      @deleted_at = deleted_at
+    end
+
+    # Custom attribute writer method with validation
+    # @param request_reason [Object] Object to be assigned
+    # @!visibility private
+    def request_reason=(request_reason)
+      if request_reason.nil?
+        fail ArgumentError, 'invalid value for "request_reason", request_reason cannot be nil.'
+      end
+      @request_reason = request_reason
+    end
+
+    # Custom attribute writer method with validation
+    # @param requested_at [Object] Object to be assigned
+    # @!visibility private
+    def requested_at=(requested_at)
+      if requested_at.nil?
+        fail ArgumentError, 'invalid value for "requested_at", requested_at cannot be nil.'
+      end
+      @requested_at = requested_at
+    end
+
+    # Returns the object in the form of hash, with additionalProperties support.
+    # @return [Hash] Returns the object in the form of hash
+    # @!visibility private
+    def to_hash
+      hash = {}
+      self.class.attribute_map.each_pair do |attr, param|
+        value = self.send(attr)
+        if value.nil?
+          is_nullable = self.class.openapi_nullable.include?(attr)
+          next if !is_nullable || (is_nullable && !instance_variable_defined?(:"@#{attr}"))
+        end
+
+        hash[param] = _to_hash(value)
+      end
+      self.additional_properties.each_pair do |attr, value|
+        hash[attr] = value
+      end
+      hash
+    end
+
+    # Checks equality by comparing each attribute.
+    # @param o [Object] Object to be compared
+    # @!visibility private
+    def ==(o)
+      return true if self.equal?(o)
+      self.class == o.class &&
+          change_request_status == o.change_request_status &&
+          decided_at == o.decided_at &&
+          decision_reason == o.decision_reason &&
+          deleted_at == o.deleted_at &&
+          request_reason == o.request_reason &&
+          requested_at == o.requested_at &&
+          additional_properties == o.additional_properties
+    end
+
+    # Calculates hash code according to all attributes.
+    # @return [Integer] Hash code
+    # @!visibility private
+    def hash
+      [change_request_status, decided_at, decision_reason, deleted_at, request_reason, requested_at, additional_properties].hash
+    end
+  end
+end
diff --git a/lib/datadog_api_client/v2/models/change_request_decision_status_type.rb b/lib/datadog_api_client/v2/models/change_request_decision_status_type.rb
new file mode 100644
index 00000000000..c50190b0832
--- /dev/null
+++ b/lib/datadog_api_client/v2/models/change_request_decision_status_type.rb
@@ -0,0 +1,28 @@
+=begin
+#Datadog API V2 Collection
+
+#Collection of all Datadog Public endpoints.
+
+The version of the OpenAPI document: 1.0
+Contact: support@datadoghq.com
+Generated by: https://github.com/DataDog/datadog-api-client-ruby/tree/master/.generator
+
+ Unless explicitly stated otherwise all files in this repository are licensed under the Apache-2.0 License.
+ This product includes software developed at Datadog (https://www.datadoghq.com/).
+ Copyright 2020-Present Datadog, Inc.
+
+=end
+
+require 'date'
+require 'time'
+
+module DatadogAPIClient::V2
+  # The status of a change request decision.
+  class ChangeRequestDecisionStatusType
+    include BaseEnumModel
+
+    REQUESTED = "REQUESTED".freeze
+    APPROVED = "APPROVED".freeze
+    DECLINED = "DECLINED".freeze
+  end
+end
diff --git a/lib/datadog_api_client/v2/models/change_request_decision_update_data.rb b/lib/datadog_api_client/v2/models/change_request_decision_update_data.rb
new file mode 100644
index 00000000000..8f57a65d278
--- /dev/null
+++ b/lib/datadog_api_client/v2/models/change_request_decision_update_data.rb
@@ -0,0 +1,143 @@
+=begin
+#Datadog API V2 Collection
+
+#Collection of all Datadog Public endpoints.
+
+The version of the OpenAPI document: 1.0
+Contact: support@datadoghq.com
+Generated by: https://github.com/DataDog/datadog-api-client-ruby/tree/master/.generator
+
+ Unless explicitly stated otherwise all files in this repository are licensed under the Apache-2.0 License.
+ This product includes software developed at Datadog (https://www.datadoghq.com/).
+ Copyright 2020-Present Datadog, Inc.
+
+=end
+
+require 'date'
+require 'time'
+
+module DatadogAPIClient::V2
+  # Data object to update a change request decision.
+  class ChangeRequestDecisionUpdateData
+    include BaseGenericModel
+
+    # Attributes of the parent change request for a decision update.
+    attr_accessor :attributes
+
+    # Relationships for updating a change request decision.
+    attr_accessor :relationships
+
+    # Change request resource type.
+    attr_reader :type
+
+    attr_accessor :additional_properties
+
+    # Attribute mapping from ruby-style variable name to JSON key.
+    # @!visibility private
+    def self.attribute_map
+      {
+        :'attributes' => :'attributes',
+        :'relationships' => :'relationships',
+        :'type' => :'type'
+      }
+    end
+
+    # Attribute type mapping.
+    # @!visibility private
+    def self.openapi_types
+      {
+        :'attributes' => :'ChangeRequestDecisionUpdateDataAttributes',
+        :'relationships' => :'ChangeRequestDecisionUpdateDataRelationships',
+        :'type' => :'ChangeRequestResourceType'
+      }
+    end
+
+    # Initializes the object
+    # @param attributes [Hash] Model attributes in the form of hash
+    # @!visibility private
+    def initialize(attributes = {})
+      if (!attributes.is_a?(Hash))
+        fail ArgumentError, "The input argument (attributes) must be a hash in `DatadogAPIClient::V2::ChangeRequestDecisionUpdateData` initialize method"
+      end
+
+      self.additional_properties = {}
+      # check to see if the attribute exists and convert string to symbol for hash key
+      attributes = attributes.each_with_object({}) { |(k, v), h|
+        if (!self.class.attribute_map.key?(k.to_sym))
+          self.additional_properties[k.to_sym] = v
+        else
+          h[k.to_sym] = v
+        end
+      }
+
+      if attributes.key?(:'attributes')
+        self.attributes = attributes[:'attributes']
+      end
+
+      if attributes.key?(:'relationships')
+        self.relationships = attributes[:'relationships']
+      end
+
+      if attributes.key?(:'type')
+        self.type = attributes[:'type']
+      end
+    end
+
+    # Check to see if the all the properties in the model are valid
+    # @return true if the model is valid
+    # @!visibility private
+    def valid?
+      return false if @type.nil?
+      true
+    end
+
+    # Custom attribute writer method with validation
+    # @param type [Object] Object to be assigned
+    # @!visibility private
+    def type=(type)
+      if type.nil?
+        fail ArgumentError, 'invalid value for "type", type cannot be nil.'
+      end
+      @type = type
+    end
+
+    # Returns the object in the form of hash, with additionalProperties support.
+    # @return [Hash] Returns the object in the form of hash
+    # @!visibility private
+    def to_hash
+      hash = {}
+      self.class.attribute_map.each_pair do |attr, param|
+        value = self.send(attr)
+        if value.nil?
+          is_nullable = self.class.openapi_nullable.include?(attr)
+          next if !is_nullable || (is_nullable && !instance_variable_defined?(:"@#{attr}"))
+        end
+
+        hash[param] = _to_hash(value)
+      end
+      self.additional_properties.each_pair do |attr, value|
+        hash[attr] = value
+      end
+      hash
+    end
+
+    # Checks equality by comparing each attribute.
+    # @param o [Object] Object to be compared
+    # @!visibility private
+    def ==(o)
+      return true if self.equal?(o)
+      self.class == o.class &&
+          attributes == o.attributes &&
+          relationships == o.relationships &&
+          type == o.type &&
+          additional_properties == o.additional_properties
+    end
+
+    # Calculates hash code according to all attributes.
+    # @return [Integer] Hash code
+    # @!visibility private
+    def hash
+      [attributes, relationships, type, additional_properties].hash
+    end
+  end
+end
diff --git a/lib/datadog_api_client/v2/models/change_request_decision_update_data_attributes.rb b/lib/datadog_api_client/v2/models/change_request_decision_update_data_attributes.rb
new file mode 100644
index 00000000000..7027871095d
--- /dev/null
+++ b/lib/datadog_api_client/v2/models/change_request_decision_update_data_attributes.rb
@@ -0,0 +1,105 @@
+=begin
+#Datadog API V2 Collection
+
+#Collection of all Datadog Public endpoints.
+
+The version of the OpenAPI document: 1.0
+Contact: support@datadoghq.com
+Generated by: https://github.com/DataDog/datadog-api-client-ruby/tree/master/.generator
+
+ Unless explicitly stated otherwise all files in this repository are licensed under the Apache-2.0 License.
+ This product includes software developed at Datadog (https://www.datadoghq.com/).
+ Copyright 2020-Present Datadog, Inc.
+
+=end
+
+require 'date'
+require 'time'
+
+module DatadogAPIClient::V2
+  # Attributes of the parent change request for a decision update.
+  class ChangeRequestDecisionUpdateDataAttributes
+    include BaseGenericModel
+
+    # The identifier of the change request.
+    attr_accessor :id
+
+    attr_accessor :additional_properties
+
+    # Attribute mapping from ruby-style variable name to JSON key.
+    # @!visibility private
+    def self.attribute_map
+      {
+        :'id' => :'id'
+      }
+    end
+
+    # Attribute type mapping.
+    # @!visibility private
+    def self.openapi_types
+      {
+        :'id' => :'String'
+      }
+    end
+
+    # Initializes the object
+    # @param attributes [Hash] Model attributes in the form of hash
+    # @!visibility private
+    def initialize(attributes = {})
+      if (!attributes.is_a?(Hash))
+        fail ArgumentError, "The input argument (attributes) must be a hash in `DatadogAPIClient::V2::ChangeRequestDecisionUpdateDataAttributes` initialize method"
+      end
+
+      self.additional_properties = {}
+      # check to see if the attribute exists and convert string to symbol for hash key
+      attributes = attributes.each_with_object({}) { |(k, v), h|
+        if (!self.class.attribute_map.key?(k.to_sym))
+          self.additional_properties[k.to_sym] = v
+        else
+          h[k.to_sym] = v
+        end
+      }
+
+      if attributes.key?(:'id')
+        self.id = attributes[:'id']
+      end
+    end
+
+    # Returns the object in the form of hash, with additionalProperties support.
+    # @return [Hash] Returns the object in the form of hash
+    # @!visibility private
+    def to_hash
+      hash = {}
+      self.class.attribute_map.each_pair do |attr, param|
+        value = self.send(attr)
+        if value.nil?
+          is_nullable = self.class.openapi_nullable.include?(attr)
+          next if !is_nullable || (is_nullable && !instance_variable_defined?(:"@#{attr}"))
+        end
+
+        hash[param] = _to_hash(value)
+      end
+      self.additional_properties.each_pair do |attr, value|
+        hash[attr] = value
+      end
+      hash
+    end
+
+    # Checks equality by comparing each attribute.
+    # @param o [Object] Object to be compared
+    # @!visibility private
+    def ==(o)
+      return true if self.equal?(o)
+      self.class == o.class &&
+          id == o.id &&
+          additional_properties == o.additional_properties
+    end
+
+    # Calculates hash code according to all attributes.
+    # @return [Integer] Hash code
+    # @!visibility private
+    def hash
+      [id, additional_properties].hash
+    end
+  end
+end
diff --git a/lib/datadog_api_client/v2/models/change_request_decision_update_data_relationships.rb b/lib/datadog_api_client/v2/models/change_request_decision_update_data_relationships.rb
new file mode 100644
index 00000000000..f45955dd801
--- /dev/null
+++ b/lib/datadog_api_client/v2/models/change_request_decision_update_data_relationships.rb
@@ -0,0 +1,123 @@
+=begin
+#Datadog API V2 Collection
+
+#Collection of all Datadog Public endpoints.
+
+The version of the OpenAPI document: 1.0
+Contact: support@datadoghq.com
+Generated by: https://github.com/DataDog/datadog-api-client-ruby/tree/master/.generator
+
+ Unless explicitly stated otherwise all files in this repository are licensed under the Apache-2.0 License.
+ This product includes software developed at Datadog (https://www.datadoghq.com/).
+ Copyright 2020-Present Datadog, Inc.
+
+=end
+
+require 'date'
+require 'time'
+
+module DatadogAPIClient::V2
+  # Relationships for updating a change request decision.
+  class ChangeRequestDecisionUpdateDataRelationships
+    include BaseGenericModel
+
+    # Relationship to change request decisions.
+    attr_reader :change_request_decisions
+
+    attr_accessor :additional_properties
+
+    # Attribute mapping from ruby-style variable name to JSON key.
+    # @!visibility private
+    def self.attribute_map
+      {
+        :'change_request_decisions' => :'change_request_decisions'
+      }
+    end
+
+    # Attribute type mapping.
+    # @!visibility private
+    def self.openapi_types
+      {
+        :'change_request_decisions' => :'ChangeRequestDecisionsRelationship'
+      }
+    end
+
+    # Initializes the object
+    # @param attributes [Hash] Model attributes in the form of hash
+    # @!visibility private
+    def initialize(attributes = {})
+      if (!attributes.is_a?(Hash))
+        fail ArgumentError, "The input argument (attributes) must be a hash in `DatadogAPIClient::V2::ChangeRequestDecisionUpdateDataRelationships` initialize method"
+      end
+
+      self.additional_properties = {}
+      # check to see if the attribute exists and convert string to symbol for hash key
+      attributes = attributes.each_with_object({}) { |(k, v), h|
+        if (!self.class.attribute_map.key?(k.to_sym))
+          self.additional_properties[k.to_sym] = v
+        else
+          h[k.to_sym] = v
+        end
+      }
+
+      if attributes.key?(:'change_request_decisions')
+        self.change_request_decisions = attributes[:'change_request_decisions']
+      end
+    end
+
+    # Check to see if the all the properties in the model are valid
+    # @return true if the model is valid
+    # @!visibility private
+    def valid?
+      return false if @change_request_decisions.nil?
+      true
+    end
+
+    # Custom attribute writer method with validation
+    # @param change_request_decisions [Object] Object to be assigned
+    # @!visibility private
+    def change_request_decisions=(change_request_decisions)
+      if change_request_decisions.nil?
+        fail ArgumentError, 'invalid value for "change_request_decisions", change_request_decisions cannot be nil.'
+      end
+      @change_request_decisions = change_request_decisions
+    end
+
+    # Returns the object in the form of hash, with additionalProperties support.
+    # @return [Hash] Returns the object in the form of hash
+    # @!visibility private
+    def to_hash
+      hash = {}
+      self.class.attribute_map.each_pair do |attr, param|
+        value = self.send(attr)
+        if value.nil?
+          is_nullable = self.class.openapi_nullable.include?(attr)
+          next if !is_nullable || (is_nullable && !instance_variable_defined?(:"@#{attr}"))
+        end
+
+        hash[param] = _to_hash(value)
+      end
+      self.additional_properties.each_pair do |attr, value|
+        hash[attr] = value
+      end
+      hash
+    end
+
+    # Checks equality by comparing each attribute.
+    # @param o [Object] Object to be compared
+    # @!visibility private
+    def ==(o)
+      return true if self.equal?(o)
+      self.class == o.class &&
+          change_request_decisions == o.change_request_decisions &&
+          additional_properties == o.additional_properties
+    end
+
+    # Calculates hash code according to all attributes.
+    # @return [Integer] Hash code
+    # @!visibility private
+    def hash
+      [change_request_decisions, additional_properties].hash
+    end
+  end
+end
diff --git a/lib/datadog_api_client/v2/models/change_request_decision_update_request.rb b/lib/datadog_api_client/v2/models/change_request_decision_update_request.rb
new file mode 100644
index 00000000000..0c19f93ebae
--- /dev/null
+++ b/lib/datadog_api_client/v2/models/change_request_decision_update_request.rb
@@ -0,0 +1,135 @@
+=begin
+#Datadog API V2 Collection
+
+#Collection of all Datadog Public endpoints.
+
+The version of the OpenAPI document: 1.0
+Contact: support@datadoghq.com
+Generated by: https://github.com/DataDog/datadog-api-client-ruby/tree/master/.generator
+
+ Unless explicitly stated otherwise all files in this repository are licensed under the Apache-2.0 License.
+ This product includes software developed at Datadog (https://www.datadoghq.com/).
+ Copyright 2020-Present Datadog, Inc.
+
+=end
+
+require 'date'
+require 'time'
+
+module DatadogAPIClient::V2
+  # Request object to update a change request decision.
+  class ChangeRequestDecisionUpdateRequest
+    include BaseGenericModel
+
+    # Data object to update a change request decision.
+    attr_reader :data
+
+    # Included resources for the change request update.
+    attr_accessor :included
+
+    attr_accessor :additional_properties
+
+    # Attribute mapping from ruby-style variable name to JSON key.
+    # @!visibility private
+    def self.attribute_map
+      {
+        :'data' => :'data',
+        :'included' => :'included'
+      }
+    end
+
+    # Attribute type mapping.
+    # @!visibility private
+    def self.openapi_types
+      {
+        :'data' => :'ChangeRequestDecisionUpdateData',
+        :'included' => :'Array<ChangeRequestDecisionCreateItem>'
+      }
+    end
+
+    # Initializes the object
+    # @param attributes [Hash] Model attributes in the form of hash
+    # @!visibility private
+    def initialize(attributes = {})
+      if (!attributes.is_a?(Hash))
+        fail ArgumentError, "The input argument (attributes) must be a hash in `DatadogAPIClient::V2::ChangeRequestDecisionUpdateRequest` initialize method"
+      end
+
+      self.additional_properties = {}
+      # check to see if the attribute exists and convert string to symbol for hash key
+      attributes = attributes.each_with_object({}) { |(k, v), h|
+        if (!self.class.attribute_map.key?(k.to_sym))
+          self.additional_properties[k.to_sym] = v
+        else
+          h[k.to_sym] = v
+        end
+      }
+
+      if attributes.key?(:'data')
+        self.data = attributes[:'data']
+      end
+
+      if attributes.key?(:'included')
+        if (value = attributes[:'included']).is_a?(Array)
+          self.included = value
+        end
+      end
+    end
+
+    # Check to see if the all the properties in the model are valid
+    # @return true if the model is valid
+    # @!visibility private
+    def valid?
+      return false if @data.nil?
+      true
+    end
+
+    # Custom attribute writer method with validation
+    # @param data [Object] Object to be assigned
+    # @!visibility private
+    def data=(data)
+      if data.nil?
+        fail ArgumentError, 'invalid value for "data", data cannot be nil.'
+      end
+      @data = data
+    end
+
+    # Returns the object in the form of hash, with additionalProperties support.
+    # @return [Hash] Returns the object in the form of hash
+    # @!visibility private
+    def to_hash
+      hash = {}
+      self.class.attribute_map.each_pair do |attr, param|
+        value = self.send(attr)
+        if value.nil?
+          is_nullable = self.class.openapi_nullable.include?(attr)
+          next if !is_nullable || (is_nullable && !instance_variable_defined?(:"@#{attr}"))
+        end
+
+        hash[param] = _to_hash(value)
+      end
+      self.additional_properties.each_pair do |attr, value|
+        hash[attr] = value
+      end
+      hash
+    end
+
+    # Checks equality by comparing each attribute.
+    # @param o [Object] Object to be compared
+    # @!visibility private
+    def ==(o)
+      return true if self.equal?(o)
+      self.class == o.class &&
+          data == o.data &&
+          included == o.included &&
+          additional_properties == o.additional_properties
+    end
+
+    # Calculates hash code according to all attributes.
+    # @return [Integer] Hash code
+    # @!visibility private
+    def hash
+      [data, included, additional_properties].hash
+    end
+  end
+end
diff --git a/lib/datadog_api_client/v2/models/change_request_decisions_relationship.rb b/lib/datadog_api_client/v2/models/change_request_decisions_relationship.rb
new file mode 100644
index 00000000000..6fcebdf4a4e
--- /dev/null
+++ b/lib/datadog_api_client/v2/models/change_request_decisions_relationship.rb
@@ -0,0 +1,125 @@
+=begin
+#Datadog API V2 Collection
+
+#Collection of all Datadog Public endpoints.
+
+The version of the OpenAPI document: 1.0
+Contact: support@datadoghq.com
+Generated by: https://github.com/DataDog/datadog-api-client-ruby/tree/master/.generator
+
+ Unless explicitly stated otherwise all files in this repository are licensed under the Apache-2.0 License.
+ This product includes software developed at Datadog (https://www.datadoghq.com/).
+ Copyright 2020-Present Datadog, Inc.
+
+=end
+
+require 'date'
+require 'time'
+
+module DatadogAPIClient::V2
+  # Relationship to change request decisions.
+  class ChangeRequestDecisionsRelationship
+    include BaseGenericModel
+
+    # Array of decision relationship data.
+    attr_reader :data
+
+    attr_accessor :additional_properties
+
+    # Attribute mapping from ruby-style variable name to JSON key.
+    # @!visibility private
+    def self.attribute_map
+      {
+        :'data' => :'data'
+      }
+    end
+
+    # Attribute type mapping.
+    # @!visibility private
+    def self.openapi_types
+      {
+        :'data' => :'Array<ChangeRequestDecisionRelationshipData>'
+      }
+    end
+
+    # Initializes the object
+    # @param attributes [Hash] Model attributes in the form of hash
+    # @!visibility private
+    def initialize(attributes = {})
+      if (!attributes.is_a?(Hash))
+        fail ArgumentError, "The input argument (attributes) must be a hash in `DatadogAPIClient::V2::ChangeRequestDecisionsRelationship` initialize method"
+      end
+
+      self.additional_properties = {}
+      # check to see if the attribute exists and convert string to symbol for hash key
+      attributes = attributes.each_with_object({}) { |(k, v), h|
+        if (!self.class.attribute_map.key?(k.to_sym))
+          self.additional_properties[k.to_sym] = v
+        else
+          h[k.to_sym] = v
+        end
+      }
+
+      if attributes.key?(:'data')
+        if (value = attributes[:'data']).is_a?(Array)
+          self.data = value
+        end
+      end
+    end
+
+    # Check to see if the all the properties in the model are valid
+    # @return true if the model is valid
+    # @!visibility private
+    def valid?
+      return false if @data.nil?
+      true
+    end
+
+    # Custom attribute writer method with validation
+    # @param data [Object] Object to be assigned
+    # @!visibility private
+    def data=(data)
+      if data.nil?
+        fail ArgumentError, 'invalid value for "data", data cannot be nil.'
+      end
+      @data = data
+    end
+
+    # Returns the object in the form of hash, with additionalProperties support.
+    # @return [Hash] Returns the object in the form of hash
+    # @!visibility private
+    def to_hash
+      hash = {}
+      self.class.attribute_map.each_pair do |attr, param|
+        value = self.send(attr)
+        if value.nil?
+          is_nullable = self.class.openapi_nullable.include?(attr)
+          next if !is_nullable || (is_nullable && !instance_variable_defined?(:"@#{attr}"))
+        end
+
+        hash[param] = _to_hash(value)
+      end
+      self.additional_properties.each_pair do |attr, value|
+        hash[attr] = value
+      end
+      hash
+    end
+
+    # Checks equality by comparing each attribute.
+    # @param o [Object] Object to be compared
+    # @!visibility private
+    def ==(o)
+      return true if self.equal?(o)
+      self.class == o.class &&
+          data == o.data &&
+          additional_properties == o.additional_properties
+    end
+
+    # Calculates hash code according to all attributes.
+    # @return [Integer] Hash code
+    # @!visibility private
+    def hash
+      [data, additional_properties].hash
+    end
+  end
+end
diff --git a/lib/datadog_api_client/v2/models/change_request_included_decision.rb b/lib/datadog_api_client/v2/models/change_request_included_decision.rb
new file mode 100644
index 00000000000..5350cc0cf35
--- /dev/null
+++ b/lib/datadog_api_client/v2/models/change_request_included_decision.rb
@@ -0,0 +1,175 @@
+=begin
+#Datadog API V2 Collection
+
+#Collection of all Datadog Public endpoints.
+
+The version of the OpenAPI document: 1.0
+Contact: support@datadoghq.com
+Generated by: https://github.com/DataDog/datadog-api-client-ruby/tree/master/.generator
+
+ Unless explicitly stated otherwise all files in this repository are licensed under the Apache-2.0 License.
+ This product includes software developed at Datadog (https://www.datadoghq.com/).
+ Copyright 2020-Present Datadog, Inc.
+
+=end
+
+require 'date'
+require 'time'
+
+module DatadogAPIClient::V2
+  # An included change request decision resource.
+  class ChangeRequestIncludedDecision
+    include BaseGenericModel
+
+    # Attributes of a change request decision in a response.
+    attr_reader :attributes
+
+    # The decision UUID.
+    attr_reader :id
+
+    # Relationships of a change request decision.
+    attr_accessor :relationships
+
+    # Change request decision resource type.
+    attr_reader :type
+
+    attr_accessor :additional_properties
+
+    # Attribute mapping from ruby-style variable name to JSON key.
+    # @!visibility private
+    def self.attribute_map
+      {
+        :'attributes' => :'attributes',
+        :'id' => :'id',
+        :'relationships' => :'relationships',
+        :'type' => :'type'
+      }
+    end
+
+    # Attribute type mapping.
+    # @!visibility private
+    def self.openapi_types
+      {
+        :'attributes' => :'ChangeRequestDecisionResponseAttributes',
+        :'id' => :'String',
+        :'relationships' => :'ChangeRequestDecisionRelationships',
+        :'type' => :'ChangeRequestDecisionResourceType'
+      }
+    end
+
+    # Initializes the object
+    # @param attributes [Hash] Model attributes in the form of hash
+    # @!visibility private
+    def initialize(attributes = {})
+      if (!attributes.is_a?(Hash))
+        fail ArgumentError, "The input argument (attributes) must be a hash in `DatadogAPIClient::V2::ChangeRequestIncludedDecision` initialize method"
+      end
+
+      self.additional_properties = {}
+      # check to see if the attribute exists and convert string to symbol for hash key
+      attributes = attributes.each_with_object({}) { |(k, v), h|
+        if (!self.class.attribute_map.key?(k.to_sym))
+          self.additional_properties[k.to_sym] = v
+        else
+          h[k.to_sym] = v
+        end
+      }
+
+      if attributes.key?(:'attributes')
+        self.attributes = attributes[:'attributes']
+      end
+
+      if attributes.key?(:'id')
+        self.id = attributes[:'id']
+      end
+
+      if attributes.key?(:'relationships')
+        self.relationships = attributes[:'relationships']
+      end
+
+      if attributes.key?(:'type')
+        self.type = attributes[:'type']
+      end
+    end
+
+    # Check to see if the all the properties in the model are valid
+    # @return true if the model is valid
+    # @!visibility private
+    def valid?
+      return false if @attributes.nil?
+      return false if @id.nil?
+      return false if @type.nil?
+      true
+    end
+
+    # Custom attribute writer method with validation
+    # @param attributes [Object] Object to be assigned
+    # @!visibility private
+    def attributes=(attributes)
+      if attributes.nil?
+        fail ArgumentError, 'invalid value for "attributes", attributes cannot be nil.'
+      end
+      @attributes = attributes
+    end
+
+    # Custom attribute writer method with validation
+    # @param id [Object] Object to be assigned
+    # @!visibility private
+    def id=(id)
+      if id.nil?
+        fail ArgumentError, 'invalid value for "id", id cannot be nil.'
+      end
+      @id = id
+    end
+
+    # Custom attribute writer method with validation
+    # @param type [Object] Object to be assigned
+    # @!visibility private
+    def type=(type)
+      if type.nil?
+        fail ArgumentError, 'invalid value for "type", type cannot be nil.'
+      end
+      @type = type
+    end
+
+    # Returns the object in the form of hash, with additionalProperties support.
+    # @return [Hash] Returns the object in the form of hash
+    # @!visibility private
+    def to_hash
+      hash = {}
+      self.class.attribute_map.each_pair do |attr, param|
+        value = self.send(attr)
+        if value.nil?
+          is_nullable = self.class.openapi_nullable.include?(attr)
+          next if !is_nullable || (is_nullable && !instance_variable_defined?(:"@#{attr}"))
+        end
+
+        hash[param] = _to_hash(value)
+      end
+      self.additional_properties.each_pair do |attr, value|
+        hash[attr] = value
+      end
+      hash
+    end
+
+    # Checks equality by comparing each attribute.
+    # @param o [Object] Object to be compared
+    # @!visibility private
+    def ==(o)
+      return true if self.equal?(o)
+      self.class == o.class &&
+          attributes == o.attributes &&
+          id == o.id &&
+          relationships == o.relationships &&
+          type == o.type &&
+          additional_properties == o.additional_properties
+    end
+
+    # Calculates hash code according to all attributes.
+    # @return [Integer] Hash code
+    # @!visibility private
+    def hash
+      [attributes, id, relationships, type, additional_properties].hash
+    end
+  end
+end
diff --git a/lib/datadog_api_client/v2/models/change_request_included_item.rb b/lib/datadog_api_client/v2/models/change_request_included_item.rb
new file mode 100644
index 00000000000..45f5b592597
--- /dev/null
+++ b/lib/datadog_api_client/v2/models/change_request_included_item.rb
@@ -0,0 +1,63 @@
+=begin
+#Datadog API V2 Collection
+
+#Collection of all Datadog Public endpoints.
+
+The version of the OpenAPI document: 1.0
+Contact: support@datadoghq.com
+Generated by: https://github.com/DataDog/datadog-api-client-ruby/tree/master/.generator
+
+ Unless explicitly stated otherwise all files in this repository are licensed under the Apache-2.0 License.
+ This product includes software developed at Datadog (https://www.datadoghq.com/).
+ Copyright 2020-Present Datadog, Inc.
+
+=end
+
+require 'date'
+require 'time'
+
+module DatadogAPIClient::V2
+  # An included resource item in the change request response.
+  module ChangeRequestIncludedItem
+    class << self
+      include BaseOneOfModel
+      include BaseOneOfModelNoDiscriminator
+
+      # List of class defined in oneOf (OpenAPI v3)
+      def openapi_one_of
+        [
+          :'ChangeRequestIncludedUser',
+          :'ChangeRequestIncludedDecision'
+        ]
+      end
+      # Builds the object
+      # @param data [Mixed] Data to be matched against the list of oneOf items
+      # @return [Object] Returns the model or the data itself
+      def build(data)
+        # Go through the list of oneOf items and attempt to identify the appropriate one.
+        # Note:
+        # - We do not attempt to check whether exactly one item matches.
+        # - No advanced validation of types in some cases (e.g. "x: { type: string }" will happily match { x: 123 })
+        #   due to the way the deserialization is made in the base_object template (it just casts without verifying).
+        # - TODO: scalar values are de facto behaving as if they were nullable.
+        # - TODO: logging when debugging is set.
+        openapi_one_of.each do |klass|
+          begin
+            next if klass == :AnyType # "nullable: true"
+            typed_data = find_and_cast_into_type(klass, data)
+            next if typed_data.respond_to?(:_unparsed) && typed_data._unparsed
+            return typed_data if typed_data
+          rescue # rescue all errors so we keep iterating even if the current item lookup raises
+          end
+        end
+
+        if openapi_one_of.include?(:AnyType)
+          data
+        else
+          self._unparsed = true
+          DatadogAPIClient::UnparsedObject.new(data)
+        end
+      end
+    end
+  end
+end
diff --git a/lib/datadog_api_client/v2/models/change_request_included_user.rb b/lib/datadog_api_client/v2/models/change_request_included_user.rb
new file mode 100644
index 00000000000..6fdd312b996
--- /dev/null
+++ b/lib/datadog_api_client/v2/models/change_request_included_user.rb
@@ -0,0 +1,165 @@
+=begin
+#Datadog API V2 Collection
+
+#Collection of all Datadog Public endpoints.
+
+The version of the OpenAPI document: 1.0
+Contact: support@datadoghq.com
+Generated by: https://github.com/DataDog/datadog-api-client-ruby/tree/master/.generator
+
+ Unless explicitly stated otherwise all files in this repository are licensed under the Apache-2.0 License.
+ This product includes software developed at Datadog (https://www.datadoghq.com/).
+ Copyright 2020-Present Datadog, Inc.
+
+=end
+
+require 'date'
+require 'time'
+
+module DatadogAPIClient::V2
+  # An included user resource.
+  class ChangeRequestIncludedUser
+    include BaseGenericModel
+
+    # Attributes of an included user.
+    attr_reader :attributes
+
+    # The user UUID.
+    attr_reader :id
+
+    # The resource type.
+    attr_reader :type
+
+    attr_accessor :additional_properties
+
+    # Attribute mapping from ruby-style variable name to JSON key.
+    # @!visibility private
+    def self.attribute_map
+      {
+        :'attributes' => :'attributes',
+        :'id' => :'id',
+        :'type' => :'type'
+      }
+    end
+
+    # Attribute type mapping.
+    # @!visibility private
+    def self.openapi_types
+      {
+        :'attributes' => :'ChangeRequestIncludedUserAttributes',
+        :'id' => :'String',
+        :'type' => :'String'
+      }
+    end
+
+    # Initializes the object
+    # @param attributes [Hash] Model attributes in the form of hash
+    # @!visibility private
+    def initialize(attributes = {})
+      if (!attributes.is_a?(Hash))
+        fail ArgumentError, "The input argument (attributes) must be a hash in `DatadogAPIClient::V2::ChangeRequestIncludedUser` initialize method"
+      end
+
+      self.additional_properties = {}
+      # check to see if the attribute exists and convert string to symbol for hash key
+      attributes = attributes.each_with_object({}) { |(k, v), h|
+        if (!self.class.attribute_map.key?(k.to_sym))
+          self.additional_properties[k.to_sym] = v
+        else
+          h[k.to_sym] = v
+        end
+      }
+
+      if attributes.key?(:'attributes')
+        self.attributes = attributes[:'attributes']
+      end
+
+      if attributes.key?(:'id')
+        self.id = attributes[:'id']
+      end
+
+      if attributes.key?(:'type')
+        self.type = attributes[:'type']
+      end
+    end
+
+    # Check to see if the all the properties in the model are valid
+    # @return true if the model is valid
+    # @!visibility private
+    def valid?
+      return false if @attributes.nil?
+      return false if @id.nil?
+      return false if @type.nil?
+      true
+    end
+
+    # Custom attribute writer method with validation
+    # @param attributes [Object] Object to be assigned
+    # @!visibility private
+    def attributes=(attributes)
+      if attributes.nil?
+        fail ArgumentError, 'invalid value for "attributes", attributes cannot be nil.'
+      end
+      @attributes = attributes
+    end
+
+    # Custom attribute writer method with validation
+    # @param id [Object] Object to be assigned
+    # @!visibility private
+    def id=(id)
+      if id.nil?
+        fail ArgumentError, 'invalid value for "id", id cannot be nil.'
+      end
+      @id = id
+    end
+
+    # Custom attribute writer method with validation
+    # @param type [Object] Object to be assigned
+    # @!visibility private
+    def type=(type)
+      if type.nil?
+        fail ArgumentError, 'invalid value for "type", type cannot be nil.'
+      end
+      @type = type
+    end
+
+    # Returns the object in the form of hash, with additionalProperties support.
+    # @return [Hash] Returns the object in the form of hash
+    # @!visibility private
+    def to_hash
+      hash = {}
+      self.class.attribute_map.each_pair do |attr, param|
+        value = self.send(attr)
+        if value.nil?
+          is_nullable = self.class.openapi_nullable.include?(attr)
+          next if !is_nullable || (is_nullable && !instance_variable_defined?(:"@#{attr}"))
+        end
+
+        hash[param] = _to_hash(value)
+      end
+      self.additional_properties.each_pair do |attr, value|
+        hash[attr] = value
+      end
+      hash
+    end
+
+    # Checks equality by comparing each attribute.
+    # @param o [Object] Object to be compared
+    # @!visibility private
+    def ==(o)
+      return true if self.equal?(o)
+      self.class == o.class &&
+          attributes == o.attributes &&
+          id == o.id &&
+          type == o.type &&
+          additional_properties == o.additional_properties
+    end
+
+    # Calculates hash code according to all attributes.
+    # @return [Integer] Hash code
+    # @!visibility private
+    def hash
+      [attributes, id, type, additional_properties].hash
+    end
+  end
+end
diff --git a/lib/datadog_api_client/v2/models/change_request_included_user_attributes.rb b/lib/datadog_api_client/v2/models/change_request_included_user_attributes.rb
new file mode 100644
index 00000000000..a192d273034
--- /dev/null
+++ b/lib/datadog_api_client/v2/models/change_request_included_user_attributes.rb
@@ -0,0 +1,165 @@
+=begin
+#Datadog API V2 Collection
+
+#Collection of all Datadog Public endpoints.
+
+The version of the OpenAPI document: 1.0
+Contact: support@datadoghq.com
+Generated by: https://github.com/DataDog/datadog-api-client-ruby/tree/master/.generator
+
+ Unless explicitly stated otherwise all files in this repository are licensed under the Apache-2.0 License.
+ This product includes software developed at Datadog (https://www.datadoghq.com/).
+ Copyright 2020-Present Datadog, Inc.
+
+=end
+
+require 'date'
+require 'time'
+
+module DatadogAPIClient::V2
+  # Attributes of an included user.
+  class ChangeRequestIncludedUserAttributes
+    include BaseGenericModel
+
+    # The email of the user.
+    attr_reader :email
+
+    # The handle of the user.
+    attr_reader :handle
+
+    # The name of the user.
+    attr_reader :name
+
+    attr_accessor :additional_properties
+
+    # Attribute mapping from ruby-style variable name to JSON key.
+    # @!visibility private
+    def self.attribute_map
+      {
+        :'email' => :'email',
+        :'handle' => :'handle',
+        :'name' => :'name'
+      }
+    end
+
+    # Attribute type mapping.
+    # @!visibility private
+    def self.openapi_types
+      {
+        :'email' => :'String',
+        :'handle' => :'String',
+        :'name' => :'String'
+      }
+    end
+
+    # Initializes the object
+    # @param attributes [Hash] Model attributes in the form of hash
+    # @!visibility private
+    def initialize(attributes = {})
+      if (!attributes.is_a?(Hash))
+        fail ArgumentError, "The input argument (attributes) must be a hash in `DatadogAPIClient::V2::ChangeRequestIncludedUserAttributes` initialize method"
+      end
+
+      self.additional_properties = {}
+      # check to see if the attribute exists and convert string to symbol for hash key
+      attributes = attributes.each_with_object({}) { |(k, v), h|
+        if (!self.class.attribute_map.key?(k.to_sym))
+          self.additional_properties[k.to_sym] = v
+        else
+          h[k.to_sym] = v
+        end
+      }
+
+      if attributes.key?(:'email')
+        self.email = attributes[:'email']
+      end
+
+      if attributes.key?(:'handle')
+        self.handle = attributes[:'handle']
+      end
+
+      if attributes.key?(:'name')
+        self.name = attributes[:'name']
+      end
+    end
+
+    # Check to see if the all the properties in the model are valid
+    # @return true if the model is valid
+    # @!visibility private
+    def valid?
+      return false if @email.nil?
+      return false if @handle.nil?
+      return false if @name.nil?
+      true
+    end
+
+    # Custom attribute writer method with validation
+    # @param email [Object] Object to be assigned
+    # @!visibility private
+    def email=(email)
+      if email.nil?
+        fail ArgumentError, 'invalid value for "email", email cannot be nil.'
+      end
+      @email = email
+    end
+
+    # Custom attribute writer method with validation
+    # @param handle [Object] Object to be assigned
+    # @!visibility private
+    def handle=(handle)
+      if handle.nil?
+        fail ArgumentError, 'invalid value for "handle", handle cannot be nil.'
+      end
+      @handle = handle
+    end
+
+    # Custom attribute writer method with validation
+    # @param name [Object] Object to be assigned
+    # @!visibility private
+    def name=(name)
+      if name.nil?
+        fail ArgumentError, 'invalid value for "name", name cannot be nil.'
+      end
+      @name = name
+    end
+
+    # Returns the object in the form of hash, with additionalProperties support.
+    # @return [Hash] Returns the object in the form of hash
+    # @!visibility private
+    def to_hash
+      hash = {}
+      self.class.attribute_map.each_pair do |attr, param|
+        value = self.send(attr)
+        if value.nil?
+          is_nullable = self.class.openapi_nullable.include?(attr)
+          next if !is_nullable || (is_nullable && !instance_variable_defined?(:"@#{attr}"))
+        end
+
+        hash[param] = _to_hash(value)
+      end
+      self.additional_properties.each_pair do |attr, value|
+        hash[attr] = value
+      end
+      hash
+    end
+
+    # Checks equality by comparing each attribute.
+    # @param o [Object] Object to be compared
+    # @!visibility private
+    def ==(o)
+      return true if self.equal?(o)
+      self.class == o.class &&
+          email == o.email &&
+          handle == o.handle &&
+          name == o.name &&
+          additional_properties == o.additional_properties
+    end
+
+    # Calculates hash code according to all attributes.
+    # @return [Integer] Hash code
+    # @!visibility private
+    def hash
+      [email, handle, name, additional_properties].hash
+    end
+  end
+end
diff --git a/lib/datadog_api_client/v2/models/change_request_relationships.rb b/lib/datadog_api_client/v2/models/change_request_relationships.rb
new file mode 100644
index 00000000000..fc78d0a9c36
--- /dev/null
+++ b/lib/datadog_api_client/v2/models/change_request_relationships.rb
@@ -0,0 +1,165 @@
+=begin
+#Datadog API V2 Collection
+
+#Collection of all Datadog Public endpoints.
+
+The version of the OpenAPI document: 1.0
+Contact: support@datadoghq.com
+Generated by: https://github.com/DataDog/datadog-api-client-ruby/tree/master/.generator
+
+ Unless explicitly stated otherwise all files in this repository are licensed under the Apache-2.0 License.
+ This product includes software developed at Datadog (https://www.datadoghq.com/).
+ Copyright 2020-Present Datadog, Inc.
+
+=end
+
+require 'date'
+require 'time'
+
+module DatadogAPIClient::V2
+  # Relationships of a change request.
+  class ChangeRequestRelationships
+    include BaseGenericModel
+
+    # Relationship to change request decisions.
+    attr_reader :change_request_decisions
+
+    # Relationship to a user.
+    attr_reader :created_by
+
+    # Relationship to a user.
+    attr_reader :modified_by
+
+    attr_accessor :additional_properties
+
+    # Attribute mapping from ruby-style variable name to JSON key.
+    # @!visibility private
+    def self.attribute_map
+      {
+        :'change_request_decisions' => :'change_request_decisions',
+        :'created_by' => :'created_by',
+        :'modified_by' => :'modified_by'
+      }
+    end
+
+    # Attribute type mapping.
+    # @!visibility private
+    def self.openapi_types
+      {
+        :'change_request_decisions' => :'ChangeRequestDecisionsRelationship',
+        :'created_by' => :'ChangeRequestUserRelationship',
+        :'modified_by' => :'ChangeRequestUserRelationship'
+      }
+    end
+
+    # Initializes the object
+    # @param attributes [Hash] Model attributes in the form of hash
+    # @!visibility private
+    def initialize(attributes = {})
+      if (!attributes.is_a?(Hash))
+        fail ArgumentError, "The input argument (attributes) must be a hash in `DatadogAPIClient::V2::ChangeRequestRelationships` initialize method"
+      end
+
+      self.additional_properties = {}
+      # check to see if the attribute exists and convert string to symbol for hash key
+      attributes = attributes.each_with_object({}) { |(k, v), h|
+        if (!self.class.attribute_map.key?(k.to_sym))
+          self.additional_properties[k.to_sym] = v
+        else
+          h[k.to_sym] = v
+        end
+      }
+
+      if attributes.key?(:'change_request_decisions')
+        self.change_request_decisions = attributes[:'change_request_decisions']
+      end
+
+      if attributes.key?(:'created_by')
+        self.created_by = attributes[:'created_by']
+      end
+
+      if attributes.key?(:'modified_by')
+        self.modified_by = attributes[:'modified_by']
+      end
+    end
+
+    # Check to see if the all the properties in the model are valid
+    # @return true if the model is valid
+    # @!visibility private
+    def valid?
+      return false if @change_request_decisions.nil?
+      return false if @created_by.nil?
+      return false if @modified_by.nil?
+      true
+    end
+
+    # Custom attribute writer method with validation
+    # @param change_request_decisions [Object] Object to be assigned
+    # @!visibility private
+    def change_request_decisions=(change_request_decisions)
+      if change_request_decisions.nil?
+        fail ArgumentError, 'invalid value for "change_request_decisions", change_request_decisions cannot be nil.'
+      end
+      @change_request_decisions = change_request_decisions
+    end
+
+    # Custom attribute writer method with validation
+    # @param created_by [Object] Object to be assigned
+    # @!visibility private
+    def created_by=(created_by)
+      if created_by.nil?
+        fail ArgumentError, 'invalid value for "created_by", created_by cannot be nil.'
+      end
+      @created_by = created_by
+    end
+
+    # Custom attribute writer method with validation
+    # @param modified_by [Object] Object to be assigned
+    # @!visibility private
+    def modified_by=(modified_by)
+      if modified_by.nil?
+        fail ArgumentError, 'invalid value for "modified_by", modified_by cannot be nil.'
+      end
+      @modified_by = modified_by
+    end
+
+    # Returns the object in the form of hash, with additionalProperties support.
+    # @return [Hash] Returns the object in the form of hash
+    # @!visibility private
+    def to_hash
+      hash = {}
+      self.class.attribute_map.each_pair do |attr, param|
+        value = self.send(attr)
+        if value.nil?
+          is_nullable = self.class.openapi_nullable.include?(attr)
+          next if !is_nullable || (is_nullable && !instance_variable_defined?(:"@#{attr}"))
+        end
+
+        hash[param] = _to_hash(value)
+      end
+      self.additional_properties.each_pair do |attr, value|
+        hash[attr] = value
+      end
+      hash
+    end
+
+    # Checks equality by comparing each attribute.
+    # @param o [Object] Object to be compared
+    # @!visibility private
+    def ==(o)
+      return true if self.equal?(o)
+      self.class == o.class &&
+          change_request_decisions == o.change_request_decisions &&
+          created_by == o.created_by &&
+          modified_by == o.modified_by &&
+          additional_properties == o.additional_properties
+    end
+
+    # Calculates hash code according to all attributes.
+    # @return [Integer] Hash code
+    # @!visibility private
+    def hash
+      [change_request_decisions, created_by, modified_by, additional_properties].hash
+    end
+  end
+end
diff --git a/lib/datadog_api_client/v2/models/change_request_resource_type.rb b/lib/datadog_api_client/v2/models/change_request_resource_type.rb
new file mode 100644
index 00000000000..cc6760b01c5
--- /dev/null
+++ b/lib/datadog_api_client/v2/models/change_request_resource_type.rb
@@ -0,0 +1,26 @@
+=begin
+#Datadog API V2 Collection
+
+#Collection of all Datadog Public endpoints.
+
+The version of the OpenAPI document: 1.0
+Contact: support@datadoghq.com
+Generated by: https://github.com/DataDog/datadog-api-client-ruby/tree/master/.generator
+
+ Unless explicitly stated otherwise all files in this repository are licensed under the Apache-2.0 License.
+ This product includes software developed at Datadog (https://www.datadoghq.com/).
+ Copyright 2020-Present Datadog, Inc.
+
+=end
+
+require 'date'
+require 'time'
+
+module DatadogAPIClient::V2
+  # Change request resource type.
+  class ChangeRequestResourceType
+    include BaseEnumModel
+
+    CHANGE_REQUEST = "change_request".freeze
+  end
+end
diff --git a/lib/datadog_api_client/v2/models/change_request_response.rb b/lib/datadog_api_client/v2/models/change_request_response.rb
new file mode 100644
index 00000000000..023ccbfa1e9
--- /dev/null
+++ b/lib/datadog_api_client/v2/models/change_request_response.rb
@@ -0,0 +1,135 @@
+=begin
+#Datadog API V2 Collection
+
+#Collection of all Datadog Public endpoints.
+
+The version of the OpenAPI document: 1.0
+Contact: support@datadoghq.com
+Generated by: https://github.com/DataDog/datadog-api-client-ruby/tree/master/.generator
+
+ Unless explicitly stated otherwise all files in this repository are licensed under the Apache-2.0 License.
+ This product includes software developed at Datadog (https://www.datadoghq.com/).
+ Copyright 2020-Present Datadog, Inc.
+
+=end
+
+require 'date'
+require 'time'
+
+module DatadogAPIClient::V2
+  # Response object for a change request.
+  class ChangeRequestResponse
+    include BaseGenericModel
+
+    # Data object for a change request response.
+    attr_reader :data
+
+    # Included resources related to the change request.
+    attr_accessor :included
+
+    attr_accessor :additional_properties
+
+    # Attribute mapping from ruby-style variable name to JSON key.
+    # @!visibility private
+    def self.attribute_map
+      {
+        :'data' => :'data',
+        :'included' => :'included'
+      }
+    end
+
+    # Attribute type mapping.
+    # @!visibility private
+    def self.openapi_types
+      {
+        :'data' => :'ChangeRequestResponseData',
+        :'included' => :'Array<ChangeRequestIncludedItem>'
+      }
+    end
+
+    # Initializes the object
+    # @param attributes [Hash] Model attributes in the form of hash
+    # @!visibility private
+    def initialize(attributes = {})
+      if (!attributes.is_a?(Hash))
+        fail ArgumentError, "The input argument (attributes) must be a hash in `DatadogAPIClient::V2::ChangeRequestResponse` initialize method"
+      end
+
+      self.additional_properties = {}
+      # check to see if the attribute exists and convert string to symbol for hash key
+      attributes = attributes.each_with_object({}) { |(k, v), h|
+        if (!self.class.attribute_map.key?(k.to_sym))
+          self.additional_properties[k.to_sym] = v
+        else
+          h[k.to_sym] = v
+        end
+      }
+
+      if attributes.key?(:'data')
+        self.data = attributes[:'data']
+      end
+
+      if attributes.key?(:'included')
+        if (value = attributes[:'included']).is_a?(Array)
+          self.included = value
+        end
+      end
+    end
+
+    # Check to see if the all the properties in the model are valid
+    # @return true if the model is valid
+    # @!visibility private
+    def valid?
+      return false if @data.nil?
+      true
+    end
+
+    # Custom attribute writer method with validation
+    # @param data [Object] Object to be assigned
+    # @!visibility private
+    def data=(data)
+      if data.nil?
+        fail ArgumentError, 'invalid value for "data", data cannot be nil.'
+      end
+      @data = data
+    end
+
+    # Returns the object in the form of hash, with additionalProperties support.
+    # @return [Hash] Returns the object in the form of hash
+    # @!visibility private
+    def to_hash
+      hash = {}
+      self.class.attribute_map.each_pair do |attr, param|
+        value = self.send(attr)
+        if value.nil?
+          is_nullable = self.class.openapi_nullable.include?(attr)
+          next if !is_nullable || (is_nullable && !instance_variable_defined?(:"@#{attr}"))
+        end
+
+        hash[param] = _to_hash(value)
+      end
+      self.additional_properties.each_pair do |attr, value|
+        hash[attr] = value
+      end
+      hash
+    end
+
+    # Checks equality by comparing each attribute.
+    # @param o [Object] Object to be compared
+    # @!visibility private
+    def ==(o)
+      return true if self.equal?(o)
+      self.class == o.class &&
+          data == o.data &&
+          included == o.included &&
+          additional_properties == o.additional_properties
+    end
+
+    # Calculates hash code according to all attributes.
+    # @return [Integer] Hash code
+    # @!visibility private
+    def hash
+      [data, included, additional_properties].hash
+    end
+  end
+end
diff --git a/lib/datadog_api_client/v2/models/change_request_response_attributes.rb b/lib/datadog_api_client/v2/models/change_request_response_attributes.rb
new file mode 100644
index 00000000000..c8df74db9f1
--- /dev/null
+++ b/lib/datadog_api_client/v2/models/change_request_response_attributes.rb
@@ -0,0 +1,508 @@
+=begin
+#Datadog API V2 Collection
+
+#Collection of all Datadog Public endpoints.
+
+The version of the OpenAPI document: 1.0
+Contact: support@datadoghq.com
+Generated by: https://github.com/DataDog/datadog-api-client-ruby/tree/master/.generator
+
+ Unless explicitly stated otherwise all files in this repository are licensed under the Apache-2.0 License.
+ This product includes software developed at Datadog (https://www.datadoghq.com/).
+ Copyright 2020-Present Datadog, Inc.
+
+=end
+
+require 'date'
+require 'time'
+
+module DatadogAPIClient::V2
+  # Attributes of a change request response.
+  class ChangeRequestResponseAttributes
+    include BaseGenericModel
+
+    # Timestamp of when the change request was archived.
+    attr_accessor :archived_at
+
+    # Custom attributes of the change request as key-value pairs.
+    attr_reader :attributes
+
+    # The UUID of the linked incident.
+    attr_reader :change_request_linked_incident_uuid
+
+    # The maintenance window query for the change request.
+    attr_reader :change_request_maintenance_window_query
+
+    # The plan associated with the change request.
+    attr_reader :change_request_plan
+
+    # The risk level of the change request.
+    attr_reader :change_request_risk
+
+    # The type of the change request.
+    attr_reader :change_request_type
+
+    # Timestamp of when the change request was closed.
+    attr_accessor :closed_at
+
+    # Timestamp of when the change request was created.
+    attr_reader :created_at
+
+    # The source from which the change request was created.
+    attr_reader :creation_source
+
+    # The description of the change request.
+    attr_reader :description
+
+    # The planned end date of the change request.
+    attr_accessor :end_date
+
+    # The human-readable key of the change request.
+    attr_reader :key
+
+    # Timestamp of when the change request was last modified.
+    attr_reader :modified_at
+
+    # The notebook ID associated with the change request plan.
+    attr_reader :plan_notebook_id
+
+    # The priority of the change request.
+    attr_reader :priority
+
+    # The project UUID associated with the change request.
+    attr_reader :project_id
+
+    # The planned start date of the change request.
+    attr_accessor :start_date
+
+    # The current status of the change request.
+    attr_reader :status
+
+    # The title of the change request.
+    attr_reader :title
+
+    # The case type.
+    attr_reader :type
+
+    attr_accessor :additional_properties
+
+    # Attribute mapping from ruby-style variable name to JSON key.
+    # @!visibility private
+    def self.attribute_map
+      {
+        :'archived_at' => :'archived_at',
+        :'attributes' => :'attributes',
+        :'change_request_linked_incident_uuid' => :'change_request_linked_incident_uuid',
+        :'change_request_maintenance_window_query' => :'change_request_maintenance_window_query',
+        :'change_request_plan' => :'change_request_plan',
+        :'change_request_risk' => :'change_request_risk',
+        :'change_request_type' => :'change_request_type',
+        :'closed_at' => :'closed_at',
+        :'created_at' => :'created_at',
+        :'creation_source' => :'creation_source',
+        :'description' => :'description',
+        :'end_date' => :'end_date',
+        :'key' => :'key',
+        :'modified_at' => :'modified_at',
+        :'plan_notebook_id' => :'plan_notebook_id',
+        :'priority' => :'priority',
+        :'project_id' => :'project_id',
+        :'start_date' => :'start_date',
+        :'status' => :'status',
+        :'title' => :'title',
+        :'type' => :'type'
+      }
+    end
+
+    # Attribute type mapping.
+    # @!visibility private
+    def self.openapi_types
+      {
+        :'archived_at' => :'Time',
+        :'attributes' => :'Hash<String, Array<String>>',
+        :'change_request_linked_incident_uuid' => :'String',
+        :'change_request_maintenance_window_query' => :'String',
+        :'change_request_plan' => :'String',
+        :'change_request_risk' => :'ChangeRequestRiskLevel',
+        :'change_request_type' => :'ChangeRequestChangeType',
+        :'closed_at' => :'Time',
+        :'created_at' => :'Time',
+        :'creation_source' => :'String',
+        :'description' => :'String',
+        :'end_date' => :'Time',
+        :'key' => :'String',
+        :'modified_at' => :'Time',
+        :'plan_notebook_id' => :'Integer',
+        :'priority' => :'String',
+        :'project_id' => :'String',
+        :'start_date' => :'Time',
+        :'status' => :'String',
+        :'title' => :'String',
+        :'type' => :'String'
+      }
+    end
+
+    # List of attributes with nullable: true
+    # @!visibility private
+    def self.openapi_nullable
+      Set.new([
+        :'archived_at',
+        :'closed_at',
+      ])
+    end
+
+    # Initializes the object
+    # @param attributes [Hash] Model attributes in the form of hash
+    # @!visibility private
+    def initialize(attributes = {})
+      if (!attributes.is_a?(Hash))
+        fail ArgumentError, "The input argument (attributes) must be a hash in `DatadogAPIClient::V2::ChangeRequestResponseAttributes` initialize method"
+      end
+
+      self.additional_properties = {}
+      # check to see if the attribute exists and convert string to symbol for hash key
+      attributes = attributes.each_with_object({}) { |(k, v), h|
+        if (!self.class.attribute_map.key?(k.to_sym))
+          self.additional_properties[k.to_sym] = v
+        else
+          h[k.to_sym] = v
+        end
+      }
+
+      if attributes.key?(:'archived_at')
+        self.archived_at = attributes[:'archived_at']
+      end
+
+      if attributes.key?(:'attributes')
+        self.attributes = attributes[:'attributes']
+      end
+
+      if attributes.key?(:'change_request_linked_incident_uuid')
+        self.change_request_linked_incident_uuid = attributes[:'change_request_linked_incident_uuid']
+      end
+
+      if attributes.key?(:'change_request_maintenance_window_query')
+        self.change_request_maintenance_window_query = attributes[:'change_request_maintenance_window_query']
+      end
+
+      if attributes.key?(:'change_request_plan')
+        self.change_request_plan = attributes[:'change_request_plan']
+      end
+
+      if attributes.key?(:'change_request_risk')
+        self.change_request_risk = attributes[:'change_request_risk']
+      end
+
+      if attributes.key?(:'change_request_type')
+        self.change_request_type = attributes[:'change_request_type']
+      end
+
+      if attributes.key?(:'closed_at')
+        self.closed_at = attributes[:'closed_at']
+      end
+
+      if attributes.key?(:'created_at')
+        self.created_at = attributes[:'created_at']
+      end
+
+      if attributes.key?(:'creation_source')
+        self.creation_source = attributes[:'creation_source']
+      end
+
+      if attributes.key?(:'description')
+        self.description = attributes[:'description']
+      end
+
+      if attributes.key?(:'end_date')
+        self.end_date = attributes[:'end_date']
+      end
+
+      if attributes.key?(:'key')
+        self.key = attributes[:'key']
+      end
+
+      if attributes.key?(:'modified_at')
+        self.modified_at = attributes[:'modified_at']
+      end
+
+      if attributes.key?(:'plan_notebook_id')
+        self.plan_notebook_id = attributes[:'plan_notebook_id']
+      end
+
+      if attributes.key?(:'priority')
+        self.priority = attributes[:'priority']
+      end
+
+      if attributes.key?(:'project_id')
+        self.project_id = attributes[:'project_id']
+      end
+
+      if attributes.key?(:'start_date')
+        self.start_date = attributes[:'start_date']
+      end
+
+      if attributes.key?(:'status')
+        self.status = attributes[:'status']
+      end
+
+      if attributes.key?(:'title')
+        self.title = attributes[:'title']
+      end
+
+      if attributes.key?(:'type')
+        self.type = attributes[:'type']
+      end
+    end
+
+    # Check to see if the all the properties in the model are valid
+    # @return true if the model is valid
+    # @!visibility private
+    def valid?
+      return false if @attributes.nil?
+      return false if @change_request_linked_incident_uuid.nil?
+      return false if @change_request_maintenance_window_query.nil?
+      return false if @change_request_plan.nil?
+      return false if @change_request_risk.nil?
+      return false if @change_request_type.nil?
+      return false if @created_at.nil?
+      return false if @creation_source.nil?
+      return false if @description.nil?
+      return false if @key.nil?
+      return false if @modified_at.nil?
+      return false if @plan_notebook_id.nil?
+      return false if @priority.nil?
+      return false if @project_id.nil?
+      return false if @status.nil?
+      return false if @title.nil?
+      return false if @type.nil?
+      true
+    end
+
+    # Custom attribute writer method with validation
+    # @param attributes [Object] Object to be assigned
+    # @!visibility private
+    def attributes=(attributes)
+      if attributes.nil?
+        fail ArgumentError, 'invalid value for "attributes", attributes cannot be nil.'
+      end
+      @attributes = attributes
+    end
+
+    # Custom attribute writer method with validation
+    # @param change_request_linked_incident_uuid [Object] Object to be assigned
+    # @!visibility private
+    def change_request_linked_incident_uuid=(change_request_linked_incident_uuid)
+      if change_request_linked_incident_uuid.nil?
+        fail ArgumentError, 'invalid value for "change_request_linked_incident_uuid", change_request_linked_incident_uuid cannot be nil.'
+      end
+      @change_request_linked_incident_uuid = change_request_linked_incident_uuid
+    end
+
+    # Custom attribute writer method with validation
+    # @param change_request_maintenance_window_query [Object] Object to be assigned
+    # @!visibility private
+    def change_request_maintenance_window_query=(change_request_maintenance_window_query)
+      if change_request_maintenance_window_query.nil?
+        fail ArgumentError, 'invalid value for "change_request_maintenance_window_query", change_request_maintenance_window_query cannot be nil.'
+      end
+      @change_request_maintenance_window_query = change_request_maintenance_window_query
+    end
+
+    # Custom attribute writer method with validation
+    # @param change_request_plan [Object] Object to be assigned
+    # @!visibility private
+    def change_request_plan=(change_request_plan)
+      if change_request_plan.nil?
+        fail ArgumentError, 'invalid value for "change_request_plan", change_request_plan cannot be nil.'
+      end
+      @change_request_plan = change_request_plan
+    end
+
+    # Custom attribute writer method with validation
+    # @param change_request_risk [Object] Object to be assigned
+    # @!visibility private
+    def change_request_risk=(change_request_risk)
+      if change_request_risk.nil?
+        fail ArgumentError, 'invalid value for "change_request_risk", change_request_risk cannot be nil.'
+      end
+      @change_request_risk = change_request_risk
+    end
+
+    # Custom attribute writer method with validation
+    # @param change_request_type [Object] Object to be assigned
+    # @!visibility private
+    def change_request_type=(change_request_type)
+      if change_request_type.nil?
+        fail ArgumentError, 'invalid value for "change_request_type", change_request_type cannot be nil.'
+      end
+      @change_request_type = change_request_type
+    end
+
+    # Custom attribute writer method with validation
+    # @param created_at [Object] Object to be assigned
+    # @!visibility private
+    def created_at=(created_at)
+      if created_at.nil?
+        fail ArgumentError, 'invalid value for "created_at", created_at cannot be nil.'
+      end
+      @created_at = created_at
+    end
+
+    # Custom attribute writer method with validation
+    # @param creation_source [Object] Object to be assigned
+    # @!visibility private
+    def creation_source=(creation_source)
+      if creation_source.nil?
+        fail ArgumentError, 'invalid value for "creation_source", creation_source cannot be nil.'
+      end
+      @creation_source = creation_source
+    end
+
+    # Custom attribute writer method with validation
+    # @param description [Object] Object to be assigned
+    # @!visibility private
+    def description=(description)
+      if description.nil?
+        fail ArgumentError, 'invalid value for "description", description cannot be nil.'
+      end
+      @description = description
+    end
+
+    # Custom attribute writer method with validation
+    # @param key [Object] Object to be assigned
+    # @!visibility private
+    def key=(key)
+      if key.nil?
+        fail ArgumentError, 'invalid value for "key", key cannot be nil.'
+      end
+      @key = key
+    end
+
+    # Custom attribute writer method with validation
+    # @param modified_at [Object] Object to be assigned
+    # @!visibility private
+    def modified_at=(modified_at)
+      if modified_at.nil?
+        fail ArgumentError, 'invalid value for "modified_at", modified_at cannot be nil.'
+      end
+      @modified_at = modified_at
+    end
+
+    # Custom attribute writer method with validation
+    # @param plan_notebook_id [Object] Object to be assigned
+    # @!visibility private
+    def plan_notebook_id=(plan_notebook_id)
+      if plan_notebook_id.nil?
+        fail ArgumentError, 'invalid value for "plan_notebook_id", plan_notebook_id cannot be nil.'
+      end
+      @plan_notebook_id = plan_notebook_id
+    end
+
+    # Custom attribute writer method with validation
+    # @param priority [Object] Object to be assigned
+    # @!visibility private
+    def priority=(priority)
+      if priority.nil?
+        fail ArgumentError, 'invalid value for "priority", priority cannot be nil.'
+      end
+      @priority = priority
+    end
+
+    # Custom attribute writer method with validation
+    # @param project_id [Object] Object to be assigned
+    # @!visibility private
+    def project_id=(project_id)
+      if project_id.nil?
+        fail ArgumentError, 'invalid value for "project_id", project_id cannot be nil.'
+      end
+      @project_id = project_id
+    end
+
+    # Custom attribute writer method with validation
+    # @param status [Object] Object to be assigned
+    # @!visibility private
+    def status=(status)
+      if status.nil?
+        fail ArgumentError, 'invalid value for "status", status cannot be nil.'
+      end
+      @status = status
+    end
+
+    # Custom attribute writer method with validation
+    # @param title [Object] Object to be assigned
+    # @!visibility private
+    def title=(title)
+      if title.nil?
+        fail ArgumentError, 'invalid value for "title", title cannot be nil.'
+      end
+      @title = title
+    end
+
+    # Custom attribute writer method with validation
+    # @param type [Object] Object to be assigned
+    # @!visibility private
+    def type=(type)
+      if type.nil?
+        fail ArgumentError, 'invalid value for "type", type cannot be nil.'
+      end
+      @type = type
+    end
+
+    # Returns the object in the form of hash, with additionalProperties support.
+    # @return [Hash] Returns the object in the form of hash
+    # @!visibility private
+    def to_hash
+      hash = {}
+      self.class.attribute_map.each_pair do |attr, param|
+        value = self.send(attr)
+        if value.nil?
+          is_nullable = self.class.openapi_nullable.include?(attr)
+          next if !is_nullable || (is_nullable && !instance_variable_defined?(:"@#{attr}"))
+        end
+
+        hash[param] = _to_hash(value)
+      end
+      self.additional_properties.each_pair do |attr, value|
+        hash[attr] = value
+      end
+      hash
+    end
+
+    # Checks equality by comparing each attribute.
+    # @param o [Object] Object to be compared
+    # @!visibility private
+    def ==(o)
+      return true if self.equal?(o)
+      self.class == o.class &&
+          archived_at == o.archived_at &&
+          attributes == o.attributes &&
+          change_request_linked_incident_uuid == o.change_request_linked_incident_uuid &&
+          change_request_maintenance_window_query == o.change_request_maintenance_window_query &&
+          change_request_plan == o.change_request_plan &&
+          change_request_risk == o.change_request_risk &&
+          change_request_type == o.change_request_type &&
+          closed_at == o.closed_at &&
+          created_at == o.created_at &&
+          creation_source == o.creation_source &&
+          description == o.description &&
+          end_date == o.end_date &&
+          key == o.key &&
+          modified_at == o.modified_at &&
+          plan_notebook_id == o.plan_notebook_id &&
+          priority == o.priority &&
+          project_id == o.project_id &&
+          start_date == o.start_date &&
+          status == o.status &&
+          title == o.title &&
+          type == o.type &&
+          additional_properties == o.additional_properties
+    end
+
+    # Calculates hash code according to all attributes.
+    # @return [Integer] Hash code
+    # @!visibility private
+    def hash
+      [archived_at, attributes, change_request_linked_incident_uuid, change_request_maintenance_window_query, change_request_plan, change_request_risk, change_request_type, closed_at, created_at, creation_source, description, end_date, key, modified_at, plan_notebook_id, priority, project_id, start_date, status, title, type, additional_properties].hash
+    end
+  end
+end
diff --git a/lib/datadog_api_client/v2/models/change_request_response_data.rb b/lib/datadog_api_client/v2/models/change_request_response_data.rb
new file mode 100644
index 00000000000..1df867281ac
--- /dev/null
+++ b/lib/datadog_api_client/v2/models/change_request_response_data.rb
@@ -0,0 +1,175 @@
+=begin
+#Datadog API V2 Collection
+
+#Collection of all Datadog Public endpoints.
+
+The version of the OpenAPI document: 1.0
+Contact: support@datadoghq.com
+Generated by: https://github.com/DataDog/datadog-api-client-ruby/tree/master/.generator
+
+ Unless explicitly stated otherwise all files in this repository are licensed under the Apache-2.0 License.
+ This product includes software developed at Datadog (https://www.datadoghq.com/).
+ Copyright 2020-Present Datadog, Inc.
+
+=end
+
+require 'date'
+require 'time'
+
+module DatadogAPIClient::V2
+  # Data object for a change request response.
+  class ChangeRequestResponseData
+    include BaseGenericModel
+
+    # Attributes of a change request response.
+    attr_reader :attributes
+
+    # The identifier of the change request.
+    attr_reader :id
+
+    # Relationships of a change request.
+    attr_accessor :relationships
+
+    # Change request resource type.
+    attr_reader :type
+
+    attr_accessor :additional_properties
+
+    # Attribute mapping from ruby-style variable name to JSON key.
+    # @!visibility private
+    def self.attribute_map
+      {
+        :'attributes' => :'attributes',
+        :'id' => :'id',
+        :'relationships' => :'relationships',
+        :'type' => :'type'
+      }
+    end
+
+    # Attribute type mapping.
+    # @!visibility private
+    def self.openapi_types
+      {
+        :'attributes' => :'ChangeRequestResponseAttributes',
+        :'id' => :'String',
+        :'relationships' => :'ChangeRequestRelationships',
+        :'type' => :'ChangeRequestResourceType'
+      }
+    end
+
+    # Initializes the object
+    # @param attributes [Hash] Model attributes in the form of hash
+    # @!visibility private
+    def initialize(attributes = {})
+      if (!attributes.is_a?(Hash))
+        fail ArgumentError, "The input argument (attributes) must be a hash in `DatadogAPIClient::V2::ChangeRequestResponseData` initialize method"
+      end
+
+      self.additional_properties = {}
+      # check to see if the attribute exists and convert string to symbol for hash key
+      attributes = attributes.each_with_object({}) { |(k, v), h|
+        if (!self.class.attribute_map.key?(k.to_sym))
+          self.additional_properties[k.to_sym] = v
+        else
+          h[k.to_sym] = v
+        end
+      }
+
+      if attributes.key?(:'attributes')
+        self.attributes = attributes[:'attributes']
+      end
+
+      if attributes.key?(:'id')
+        self.id = attributes[:'id']
+      end
+
+      if attributes.key?(:'relationships')
+        self.relationships = attributes[:'relationships']
+      end
+
+      if attributes.key?(:'type')
+        self.type = attributes[:'type']
+      end
+    end
+
+    # Check to see if the all the properties in the model are valid
+    # @return true if the model is valid
+    # @!visibility private
+    def valid?
+      return false if @attributes.nil?
+      return false if @id.nil?
+      return false if @type.nil?
+      true
+    end
+
+    # Custom attribute writer method with validation
+    # @param attributes [Object] Object to be assigned
+    # @!visibility private
+    def attributes=(attributes)
+      if attributes.nil?
+        fail ArgumentError, 'invalid value for "attributes", attributes cannot be nil.'
+      end
+      @attributes = attributes
+    end
+
+    # Custom attribute writer method with validation
+    # @param id [Object] Object to be assigned
+    # @!visibility private
+    def id=(id)
+      if id.nil?
+        fail ArgumentError, 'invalid value for "id", id cannot be nil.'
+      end
+      @id = id
+    end
+
+    # Custom attribute writer method with validation
+    # @param type [Object] Object to be assigned
+    # @!visibility private
+    def type=(type)
+      if type.nil?
+        fail ArgumentError, 'invalid value for "type", type cannot be nil.'
+      end
+      @type = type
+    end
+
+    # Returns the object in the form of hash, with additionalProperties support.
+    # @return [Hash] Returns the object in the form of hash
+    # @!visibility private
+    def to_hash
+      hash = {}
+      self.class.attribute_map.each_pair do |attr, param|
+        value = self.send(attr)
+        if value.nil?
+          is_nullable = self.class.openapi_nullable.include?(attr)
+          next if !is_nullable || (is_nullable && !instance_variable_defined?(:"@#{attr}"))
+        end
+
+        hash[param] = _to_hash(value)
+      end
+      self.additional_properties.each_pair do |attr, value|
+        hash[attr] = value
+      end
+      hash
+    end
+
+    # Checks equality by comparing each attribute.
+    # @param o [Object] Object to be compared
+    # @!visibility private
+    def ==(o)
+      return true if self.equal?(o)
+      self.class == o.class &&
+          attributes == o.attributes &&
+          id == o.id &&
+          relationships == o.relationships &&
+          type == o.type &&
+          additional_properties == o.additional_properties
+    end
+
+    # Calculates hash code according to all attributes.
+    # @return [Integer] Hash code
+    # @!visibility private
+    def hash
+      [attributes, id, relationships, type, additional_properties].hash
+    end
+  end
+end
diff --git a/lib/datadog_api_client/v2/models/change_request_risk_level.rb b/lib/datadog_api_client/v2/models/change_request_risk_level.rb
new file mode 100644
index 00000000000..939cf42b5bb
--- /dev/null
+++ b/lib/datadog_api_client/v2/models/change_request_risk_level.rb
@@ -0,0 +1,29 @@
+=begin
+#Datadog API V2 Collection
+
+#Collection of all Datadog Public endpoints.
+
+The version of the OpenAPI document: 1.0
+Contact: support@datadoghq.com
+Generated by: https://github.com/DataDog/datadog-api-client-ruby/tree/master/.generator
+
+ Unless explicitly stated otherwise all files in this repository are licensed under the Apache-2.0 License.
+ This product includes software developed at Datadog (https://www.datadoghq.com/).
+ Copyright 2020-Present Datadog, Inc.
+
+=end
+
+require 'date'
+require 'time'
+
+module DatadogAPIClient::V2
+  # The risk level of the change request.
+  class ChangeRequestRiskLevel
+    include BaseEnumModel
+
+    UNDEFINED = "UNDEFINED".freeze
+    LOW = "LOW".freeze
+    MEDIUM = "MEDIUM".freeze
+    HIGH = "HIGH".freeze
+  end
+end
diff --git a/lib/datadog_api_client/v2/models/change_request_update_attributes.rb b/lib/datadog_api_client/v2/models/change_request_update_attributes.rb
new file mode 100644
index 00000000000..83349c0db21
--- /dev/null
+++ b/lib/datadog_api_client/v2/models/change_request_update_attributes.rb
@@ -0,0 +1,155 @@
+=begin
+#Datadog API V2 Collection
+
+#Collection of all Datadog Public endpoints.
+
+The version of the OpenAPI document: 1.0
+Contact: support@datadoghq.com
+Generated by: https://github.com/DataDog/datadog-api-client-ruby/tree/master/.generator
+
+ Unless explicitly stated otherwise all files in this repository are licensed under the Apache-2.0 License.
+ This product includes software developed at Datadog (https://www.datadoghq.com/).
+ Copyright 2020-Present Datadog, Inc.
+
+=end
+
+require 'date'
+require 'time'
+
+module DatadogAPIClient::V2
+  # Attributes for updating a change request.
+  class ChangeRequestUpdateAttributes
+    include BaseGenericModel
+
+    # The plan associated with the change request.
+    attr_accessor :change_request_plan
+
+    # The risk level of the change request.
+    attr_accessor :change_request_risk
+
+    # The type of the change request.
+    attr_accessor :change_request_type
+
+    # The planned end date of the change request.
+    attr_accessor :end_date
+
+    # The identifier of the change request to update.
+    attr_accessor :id
+
+    # The planned start date of the change request.
+    attr_accessor :start_date
+
+    attr_accessor :additional_properties
+
+    # Attribute mapping from ruby-style variable name to JSON key.
+    # @!visibility private
+    def self.attribute_map
+      {
+        :'change_request_plan' => :'change_request_plan',
+        :'change_request_risk' => :'change_request_risk',
+        :'change_request_type' => :'change_request_type',
+        :'end_date' => :'end_date',
+        :'id' => :'id',
+        :'start_date' => :'start_date'
+      }
+    end
+
+    # Attribute type mapping.
+    # @!visibility private
+    def self.openapi_types
+      {
+        :'change_request_plan' => :'String',
+        :'change_request_risk' => :'ChangeRequestRiskLevel',
+        :'change_request_type' => :'ChangeRequestChangeType',
+        :'end_date' => :'Time',
+        :'id' => :'String',
+        :'start_date' => :'Time'
+      }
+    end
+
+    # Initializes the object
+    # @param attributes [Hash] Model attributes in the form of hash
+    # @!visibility private
+    def initialize(attributes = {})
+      if (!attributes.is_a?(Hash))
+        fail ArgumentError, "The input argument (attributes) must be a hash in `DatadogAPIClient::V2::ChangeRequestUpdateAttributes` initialize method"
+      end
+
+      self.additional_properties = {}
+      # check to see if the attribute exists and convert string to symbol for hash key
+      attributes = attributes.each_with_object({}) { |(k, v), h|
+        if (!self.class.attribute_map.key?(k.to_sym))
+          self.additional_properties[k.to_sym] = v
+        else
+          h[k.to_sym] = v
+        end
+      }
+
+      if attributes.key?(:'change_request_plan')
+        self.change_request_plan = attributes[:'change_request_plan']
+      end
+
+      if attributes.key?(:'change_request_risk')
+        self.change_request_risk = attributes[:'change_request_risk']
+      end
+
+      if attributes.key?(:'change_request_type')
+        self.change_request_type = attributes[:'change_request_type']
+      end
+
+      if attributes.key?(:'end_date')
+        self.end_date = attributes[:'end_date']
+      end
+
+      if attributes.key?(:'id')
+        self.id = attributes[:'id']
+      end
+
+      if attributes.key?(:'start_date')
+        self.start_date = attributes[:'start_date']
+      end
+    end
+
+    # Returns the object in the form of hash, with additionalProperties support.
+    # @return [Hash] Returns the object in the form of hash
+    # @!visibility private
+    def to_hash
+      hash = {}
+      self.class.attribute_map.each_pair do |attr, param|
+        value = self.send(attr)
+        if value.nil?
+          is_nullable = self.class.openapi_nullable.include?(attr)
+          next if !is_nullable || (is_nullable && !instance_variable_defined?(:"@#{attr}"))
+        end
+
+        hash[param] = _to_hash(value)
+      end
+      self.additional_properties.each_pair do |attr, value|
+        hash[attr] = value
+      end
+      hash
+    end
+
+    # Checks equality by comparing each attribute.
+    # @param o [Object] Object to be compared
+    # @!visibility private
+    def ==(o)
+      return true if self.equal?(o)
+      self.class == o.class &&
+          change_request_plan == o.change_request_plan &&
+          change_request_risk == o.change_request_risk &&
+          change_request_type == o.change_request_type &&
+          end_date == o.end_date &&
+          id == o.id &&
+          start_date == o.start_date &&
+          additional_properties == o.additional_properties
+    end
+
+    # Calculates hash code according to all attributes.
+    # @return [Integer] Hash code
+    # @!visibility private
+    def hash
+      [change_request_plan, change_request_risk, change_request_type, end_date, id, start_date, additional_properties].hash
+    end
+  end
+end
diff --git a/lib/datadog_api_client/v2/models/change_request_update_data.rb b/lib/datadog_api_client/v2/models/change_request_update_data.rb
new file mode 100644
index 00000000000..b053b90e1bb
--- /dev/null
+++ b/lib/datadog_api_client/v2/models/change_request_update_data.rb
@@ -0,0 +1,143 @@
+=begin
+#Datadog API V2 Collection
+
+#Collection of all Datadog Public endpoints.
+
+The version of the OpenAPI document: 1.0
+Contact: support@datadoghq.com
+Generated by: https://github.com/DataDog/datadog-api-client-ruby/tree/master/.generator
+
+ Unless explicitly stated otherwise all files in this repository are licensed under the Apache-2.0 License.
+ This product includes software developed at Datadog (https://www.datadoghq.com/).
+ Copyright 2020-Present Datadog, Inc.
+
+=end
+
+require 'date'
+require 'time'
+
+module DatadogAPIClient::V2
+  # Data object to update a change request.
+  class ChangeRequestUpdateData
+    include BaseGenericModel
+
+    # Attributes for updating a change request.
+    attr_accessor :attributes
+
+    # Relationships for updating a change request.
+    attr_accessor :relationships
+
+    # Change request resource type.
+    attr_reader :type
+
+    attr_accessor :additional_properties
+
+    # Attribute mapping from ruby-style variable name to JSON key.
+    # @!visibility private
+    def self.attribute_map
+      {
+        :'attributes' => :'attributes',
+        :'relationships' => :'relationships',
+        :'type' => :'type'
+      }
+    end
+
+    # Attribute type mapping.
+    # @!visibility private
+    def self.openapi_types
+      {
+        :'attributes' => :'ChangeRequestUpdateAttributes',
+        :'relationships' => :'ChangeRequestUpdateRelationships',
+        :'type' => :'ChangeRequestResourceType'
+      }
+    end
+
+    # Initializes the object
+    # @param attributes [Hash] Model attributes in the form of hash
+    # @!visibility private
+    def initialize(attributes = {})
+      if (!attributes.is_a?(Hash))
+        fail ArgumentError, "The input argument (attributes) must be a hash in `DatadogAPIClient::V2::ChangeRequestUpdateData` initialize method"
+      end
+
+      self.additional_properties = {}
+      # check to see if the attribute exists and convert string to symbol for hash key
+      attributes = attributes.each_with_object({}) { |(k, v), h|
+        if (!self.class.attribute_map.key?(k.to_sym))
+          self.additional_properties[k.to_sym] = v
+        else
+          h[k.to_sym] = v
+        end
+      }
+
+      if attributes.key?(:'attributes')
+        self.attributes = attributes[:'attributes']
+      end
+
+      if attributes.key?(:'relationships')
+        self.relationships = attributes[:'relationships']
+      end
+
+      if attributes.key?(:'type')
+        self.type = attributes[:'type']
+      end
+    end
+
+    # Check to see if the all the properties in the model are valid
+    # @return true if the model is valid
+    # @!visibility private
+    def valid?
+      return false if @type.nil?
+      true
+    end
+
+    # Custom attribute writer method with validation
+    # @param type [Object] Object to be assigned
+    # @!visibility private
+    def type=(type)
+      if type.nil?
+        fail ArgumentError, 'invalid value for "type", type cannot be nil.'
+      end
+      @type = type
+    end
+
+    # Returns the object in the form of hash, with additionalProperties support.
+    # @return [Hash] Returns the object in the form of hash
+    # @!visibility private
+    def to_hash
+      hash = {}
+      self.class.attribute_map.each_pair do |attr, param|
+        value = self.send(attr)
+        if value.nil?
+          is_nullable = self.class.openapi_nullable.include?(attr)
+          next if !is_nullable || (is_nullable && !instance_variable_defined?(:"@#{attr}"))
+        end
+
+        hash[param] = _to_hash(value)
+      end
+      self.additional_properties.each_pair do |attr, value|
+        hash[attr] = value
+      end
+      hash
+    end
+
+    # Checks equality by comparing each attribute.
+    # @param o [Object] Object to be compared
+    # @!visibility private
+    def ==(o)
+      return true if self.equal?(o)
+      self.class == o.class &&
+          attributes == o.attributes &&
+          relationships == o.relationships &&
+          type == o.type &&
+          additional_properties == o.additional_properties
+    end
+
+    # Calculates hash code according to all attributes.
+    # @return [Integer] Hash code
+    # @!visibility private
+    def hash
+      [attributes, relationships, type, additional_properties].hash
+    end
+  end
+end
diff --git a/lib/datadog_api_client/v2/models/change_request_update_relationships.rb b/lib/datadog_api_client/v2/models/change_request_update_relationships.rb
new file mode 100644
index 00000000000..a613369d6db
--- /dev/null
+++ b/lib/datadog_api_client/v2/models/change_request_update_relationships.rb
@@ -0,0 +1,105 @@
+=begin
+#Datadog API V2 Collection
+
+#Collection of all Datadog Public endpoints.
+
+The version of the OpenAPI document: 1.0
+Contact: support@datadoghq.com
+Generated by: https://github.com/DataDog/datadog-api-client-ruby/tree/master/.generator
+
+ Unless explicitly stated otherwise all files in this repository are licensed under the Apache-2.0 License.
+ This product includes software developed at Datadog (https://www.datadoghq.com/).
+ Copyright 2020-Present Datadog, Inc.
+
+=end
+
+require 'date'
+require 'time'
+
+module DatadogAPIClient::V2
+  # Relationships for updating a change request.
+  class ChangeRequestUpdateRelationships
+    include BaseGenericModel
+
+    # Relationship to change request decisions.
+    attr_accessor :change_request_decisions
+
+    attr_accessor :additional_properties
+
+    # Attribute mapping from ruby-style variable name to JSON key.
+    # @!visibility private
+    def self.attribute_map
+      {
+        :'change_request_decisions' => :'change_request_decisions'
+      }
+    end
+
+    # Attribute type mapping.
+    # @!visibility private
+    def self.openapi_types
+      {
+        :'change_request_decisions' => :'ChangeRequestDecisionsRelationship'
+      }
+    end
+
+    # Initializes the object
+    # @param attributes [Hash] Model attributes in the form of hash
+    # @!visibility private
+    def initialize(attributes = {})
+      if (!attributes.is_a?(Hash))
+        fail ArgumentError, "The input argument (attributes) must be a hash in `DatadogAPIClient::V2::ChangeRequestUpdateRelationships` initialize method"
+      end
+
+      self.additional_properties = {}
+      # check to see if the attribute exists and convert string to symbol for hash key
+      attributes = attributes.each_with_object({}) { |(k, v), h|
+        if (!self.class.attribute_map.key?(k.to_sym))
+          self.additional_properties[k.to_sym] = v
+        else
+          h[k.to_sym] = v
+        end
+      }
+
+      if attributes.key?(:'change_request_decisions')
+        self.change_request_decisions = attributes[:'change_request_decisions']
+      end
+    end
+
+    # Returns the object in the form of hash, with additionalProperties support.
+    # @return [Hash] Returns the object in the form of hash
+    # @!visibility private
+    def to_hash
+      hash = {}
+      self.class.attribute_map.each_pair do |attr, param|
+        value = self.send(attr)
+        if value.nil?
+          is_nullable = self.class.openapi_nullable.include?(attr)
+          next if !is_nullable || (is_nullable && !instance_variable_defined?(:"@#{attr}"))
+        end
+
+        hash[param] = _to_hash(value)
+      end
+      self.additional_properties.each_pair do |attr, value|
+        hash[attr] = value
+      end
+      hash
+    end
+
+    # Checks equality by comparing each attribute.
+    # @param o [Object] Object to be compared
+    # @!visibility private
+    def ==(o)
+      return true if self.equal?(o)
+      self.class == o.class &&
+          change_request_decisions == o.change_request_decisions &&
+          additional_properties == o.additional_properties
+    end
+
+    # Calculates hash code according to all attributes.
+    # @return [Integer] Hash code
+    # @!visibility private
+    def hash
+      [change_request_decisions, additional_properties].hash
+    end
+  end
+end
diff --git a/lib/datadog_api_client/v2/models/change_request_update_request.rb b/lib/datadog_api_client/v2/models/change_request_update_request.rb
new file mode 100644
index 00000000000..8e3bafd4cf4
--- /dev/null
+++ b/lib/datadog_api_client/v2/models/change_request_update_request.rb
@@ -0,0 +1,135 @@
+=begin
+#Datadog API V2 Collection
+
+#Collection of all Datadog Public endpoints.
+
+The version of the OpenAPI document: 1.0
+Contact: support@datadoghq.com
+Generated by: https://github.com/DataDog/datadog-api-client-ruby/tree/master/.generator
+
+ Unless explicitly stated otherwise all files in this repository are licensed under the Apache-2.0 License.
+ This product includes software developed at Datadog (https://www.datadoghq.com/).
+ Copyright 2020-Present Datadog, Inc.
+
+=end
+
+require 'date'
+require 'time'
+
+module DatadogAPIClient::V2
+  # Request object to update a change request.
+  class ChangeRequestUpdateRequest
+    include BaseGenericModel
+
+    # Data object to update a change request.
+    attr_reader :data
+
+    # Included resources for the change request update.
+    attr_accessor :included
+
+    attr_accessor :additional_properties
+
+    # Attribute mapping from ruby-style variable name to JSON key.
+    # @!visibility private
+    def self.attribute_map
+      {
+        :'data' => :'data',
+        :'included' => :'included'
+      }
+    end
+
+    # Attribute type mapping.
+    # @!visibility private
+    def self.openapi_types
+      {
+        :'data' => :'ChangeRequestUpdateData',
+        :'included' => :'Array<ChangeRequestDecisionCreateItem>'
+      }
+    end
+
+    # Initializes the object
+    # @param attributes [Hash] Model attributes in the form of hash
+    # @!visibility private
+    def initialize(attributes = {})
+      if (!attributes.is_a?(Hash))
+        fail ArgumentError, "The input argument (attributes) must be a hash in `DatadogAPIClient::V2::ChangeRequestUpdateRequest` initialize method"
+      end
+
+      self.additional_properties = {}
+      # check to see if the attribute exists and convert string to symbol for hash key
+      attributes = attributes.each_with_object({}) { |(k, v), h|
+        if (!self.class.attribute_map.key?(k.to_sym))
+          self.additional_properties[k.to_sym] = v
+        else
+          h[k.to_sym] = v
+        end
+      }
+
+      if attributes.key?(:'data')
+        self.data = attributes[:'data']
+      end
+
+      if attributes.key?(:'included')
+        if (value = attributes[:'included']).is_a?(Array)
+          self.included = value
+        end
+      end
+    end
+
+    # Check to see if the all the properties in the model are valid
+    # @return true if the model is valid
+    # @!visibility private
+    def valid?
+      return false if @data.nil?
+      true
+    end
+
+    # Custom attribute writer method with validation
+    # @param data [Object] Object to be assigned
+    # @!visibility private
+    def data=(data)
+      if data.nil?
+        fail ArgumentError, 'invalid value for "data", data cannot be nil.'
+      end
+      @data = data
+    end
+
+    # Returns the object in the form of hash, with additionalProperties support.
+    # @return [Hash] Returns the object in the form of hash
+    # @!visibility private
+    def to_hash
+      hash = {}
+      self.class.attribute_map.each_pair do |attr, param|
+        value = self.send(attr)
+        if value.nil?
+          is_nullable = self.class.openapi_nullable.include?(attr)
+          next if !is_nullable || (is_nullable && !instance_variable_defined?(:"@#{attr}"))
+        end
+
+        hash[param] = _to_hash(value)
+      end
+      self.additional_properties.each_pair do |attr, value|
+        hash[attr] = value
+      end
+      hash
+    end
+
+    # Checks equality by comparing each attribute.
+    # @param o [Object] Object to be compared
+    # @!visibility private
+    def ==(o)
+      return true if self.equal?(o)
+      self.class == o.class &&
+          data == o.data &&
+          included == o.included &&
+          additional_properties == o.additional_properties
+    end
+
+    # Calculates hash code according to all attributes.
+    # @return [Integer] Hash code
+    # @!visibility private
+    def hash
+      [data, included, additional_properties].hash
+    end
+  end
+end
diff --git a/lib/datadog_api_client/v2/models/change_request_user_relationship.rb b/lib/datadog_api_client/v2/models/change_request_user_relationship.rb
new file mode 100644
index 00000000000..efe7030658e
--- /dev/null
+++ b/lib/datadog_api_client/v2/models/change_request_user_relationship.rb
@@ -0,0 +1,113 @@
+=begin
+#Datadog API V2 Collection
+
+#Collection of all Datadog Public endpoints.
+
+The version of the OpenAPI document: 1.0
+Contact: support@datadoghq.com
+Generated by: https://github.com/DataDog/datadog-api-client-ruby/tree/master/.generator
+
+ Unless explicitly stated otherwise all files in this repository are licensed under the Apache-2.0 License.
+ This product includes software developed at Datadog (https://www.datadoghq.com/).
+ Copyright 2020-Present Datadog, Inc.
+
+=end
+
+require 'date'
+require 'time'
+
+module DatadogAPIClient::V2
+  # Relationship to a user.
+  class ChangeRequestUserRelationship
+    include BaseGenericModel
+
+    # User relationship data.
+    attr_accessor :data
+
+    attr_accessor :additional_properties
+
+    # Attribute mapping from ruby-style variable name to JSON key.
+    # @!visibility private
+    def self.attribute_map
+      {
+        :'data' => :'data'
+      }
+    end
+
+    # Attribute type mapping.
+    # @!visibility private
+    def self.openapi_types
+      {
+        :'data' => :'ChangeRequestUserRelationshipData'
+      }
+    end
+
+    # List of attributes with nullable: true
+    # @!visibility private
+    def self.openapi_nullable
+      Set.new([
+        :'data',
+      ])
+    end
+
+    # Initializes the object
+    # @param attributes [Hash] Model attributes in the form of hash
+    # @!visibility private
+    def initialize(attributes = {})
+      if (!attributes.is_a?(Hash))
+        fail ArgumentError, "The input argument (attributes) must be a hash in `DatadogAPIClient::V2::ChangeRequestUserRelationship` initialize method"
+      end
+
+      self.additional_properties = {}
+      # check to see if the attribute exists and convert string to symbol for hash key
+      attributes = attributes.each_with_object({}) { |(k, v), h|
+        if (!self.class.attribute_map.key?(k.to_sym))
+          self.additional_properties[k.to_sym] = v
+        else
+          h[k.to_sym] = v
+        end
+      }
+
+      if attributes.key?(:'data')
+        self.data = attributes[:'data']
+      end
+    end
+
+    # Returns the object in the form of hash, with additionalProperties support.
+    # @return [Hash] Returns the object in the form of hash
+    # @!visibility private
+    def to_hash
+      hash = {}
+      self.class.attribute_map.each_pair do |attr, param|
+        value = self.send(attr)
+        if value.nil?
+          is_nullable = self.class.openapi_nullable.include?(attr)
+          next if !is_nullable || (is_nullable && !instance_variable_defined?(:"@#{attr}"))
+        end
+
+        hash[param] = _to_hash(value)
+      end
+      self.additional_properties.each_pair do |attr, value|
+        hash[attr] = value
+      end
+      hash
+    end
+
+    # Checks equality by comparing each attribute.
+    # @param o [Object] Object to be compared
+    # @!visibility private
+    def ==(o)
+      return true if self.equal?(o)
+      self.class == o.class &&
+          data == o.data &&
+          additional_properties == o.additional_properties
+    end
+
+    # Calculates hash code according to all attributes.
+    # @return [Integer] Hash code
+    # @!visibility private
+    def hash
+      [data, additional_properties].hash
+    end
+  end
+end
diff --git a/lib/datadog_api_client/v2/models/change_request_user_relationship_data.rb b/lib/datadog_api_client/v2/models/change_request_user_relationship_data.rb
new file mode 100644
index 00000000000..fc5303d6b3e
--- /dev/null
+++ b/lib/datadog_api_client/v2/models/change_request_user_relationship_data.rb
@@ -0,0 +1,144 @@
+=begin
+#Datadog API V2 Collection
+
+#Collection of all Datadog Public endpoints.
+
+The version of the OpenAPI document: 1.0
+Contact: support@datadoghq.com
+Generated by: https://github.com/DataDog/datadog-api-client-ruby/tree/master/.generator
+
+ Unless explicitly stated otherwise all files in this repository are licensed under the Apache-2.0 License.
+ This product includes software developed at Datadog (https://www.datadoghq.com/).
+ Copyright 2020-Present Datadog, Inc.
+
+=end
+
+require 'date'
+require 'time'
+
+module DatadogAPIClient::V2
+  # User relationship data.
+  class ChangeRequestUserRelationshipData
+    include BaseGenericModel
+
+    # The user UUID.
+    attr_reader :id
+
+    # The user resource type.
+    attr_reader :type
+
+    attr_accessor :additional_properties
+
+    # Attribute mapping from ruby-style variable name to JSON key.
+    # @!visibility private
+    def self.attribute_map
+      {
+        :'id' => :'id',
+        :'type' => :'type'
+      }
+    end
+
+    # Attribute type mapping.
+    # @!visibility private
+    def self.openapi_types
+      {
+        :'id' => :'String',
+        :'type' => :'String'
+      }
+    end
+
+    # Initializes the object
+    # @param attributes [Hash] Model attributes in the form of hash
+    # @!visibility private
+    def initialize(attributes = {})
+      if (!attributes.is_a?(Hash))
+        fail ArgumentError, "The input argument (attributes) must be a hash in `DatadogAPIClient::V2::ChangeRequestUserRelationshipData` initialize method"
+      end
+
+      self.additional_properties = {}
+      # check to see if the attribute exists and convert string to symbol for hash key
+      attributes = attributes.each_with_object({}) { |(k, v), h|
+        if (!self.class.attribute_map.key?(k.to_sym))
+          self.additional_properties[k.to_sym] = v
+        else
+          h[k.to_sym] = v
+        end
+      }
+
+      if attributes.key?(:'id')
+        self.id = attributes[:'id']
+      end
+
+      if attributes.key?(:'type')
+        self.type = attributes[:'type']
+      end
+    end
+
+    # Check to see if the all the properties in the model are valid
+    # @return true if the model is valid
+    # @!visibility private
+    def valid?
+      return false if @id.nil?
+      return false if @type.nil?
+      true
+    end
+
+    # Custom attribute writer method with validation
+    # @param id [Object] Object to be assigned
+    # @!visibility private
+    def id=(id)
+      if id.nil?
+        fail ArgumentError, 'invalid value for "id", id cannot be nil.'
+      end
+      @id = id
+    end
+
+    # Custom attribute writer method with validation
+    # @param type [Object] Object to be assigned
+    # @!visibility private
+    def type=(type)
+      if type.nil?
+        fail ArgumentError, 'invalid value for "type", type cannot be nil.'
+      end
+      @type = type
+    end
+
+    # Returns the object in the form of hash, with additionalProperties support.
+    # @return [Hash] Returns the object in the form of hash
+    # @!visibility private
+    def to_hash
+      hash = {}
+      self.class.attribute_map.each_pair do |attr, param|
+        value = self.send(attr)
+        if value.nil?
+          is_nullable = self.class.openapi_nullable.include?(attr)
+          next if !is_nullable || (is_nullable && !instance_variable_defined?(:"@#{attr}"))
+        end
+
+        hash[param] = _to_hash(value)
+      end
+      self.additional_properties.each_pair do |attr, value|
+        hash[attr] = value
+      end
+      hash
+    end
+
+    # Checks equality by comparing each attribute.
+    # @param o [Object] Object to be compared
+    # @!visibility private
+    def ==(o)
+      return true if self.equal?(o)
+      self.class == o.class &&
+          id == o.id &&
+          type == o.type &&
+          additional_properties == o.additional_properties
+    end
+
+    # Calculates hash code according to all attributes.
+    # @return [Integer] Hash code
+    # @!visibility private
+    def hash
+      [id, type, additional_properties].hash
+    end
+  end
+end