# /api/v3/custom_actions/{id}/execute
---
post:
  parameters:
  - description: The id of the custom action to execute
    example: '1'
    in: path
    name: id
    required: true
    schema:
      type: integer
  responses:
    '200':
      description: OK
      headers: {}
    '400':
      content:
        application/hal+json:
          examples:
            response:
              value:
                _type: Error
                errorIdentifier: urn:openproject-org:api:v3:errors:InvalidRequestBody
                message: The request body was not a single JSON object.
      description: Occurs when the client did not send a valid JSON object in the
        request body.
      headers: {}
    '403':
      content:
        application/hal+json:
          examples:
            response:
              value:
                _type: Error
                errorIdentifier: urn:openproject-org:api:v3:errors:MissingPermission
                message: You are not authorized to access this resource.
      description: |-
        Returned if the client does not have sufficient permissions.

        **Required permission:** edit work packages - Additional permissions might be required based on the custom action.
      headers: {}
    '404':
      content:
        application/hal+json:
          examples:
            response:
              value:
                _type: Error
                errorIdentifier: urn:openproject-org:api:v3:errors:NotFound
                message: The requested resource could not be found.
      description: Returned if the custom action does not exist.
      headers: {}
    '409':
      content:
        application/hal+json:
          examples:
            response:
              value:
                _type: Error
                errorIdentifier: urn:openproject-org:api:v3:errors:UpdateConflict
                message: Couldn't update the resource because of conflicting modifications.
      description: Returned if the client provided an outdated lockVersion or no lockVersion
        at all.
      headers: {}
    '422':
      content:
        application/hal+json:
          examples:
            response:
              value:
                _embedded:
                  details:
                    attribute: delay
                _type: Error
                errorIdentifier: urn:openproject-org:api:v3:errors:PropertyConstraintViolation
                message: Delay must be a number greater than or equal to 0
      description: Returned if the custom action was not executed successfully e.g.
        when a constraint on a work package property was violated.
      headers: {}
  tags:
  - Custom actions
  description: |-
    A POST to this end point executes the custom action on the work package provided in the payload. The altered work package will be returned. In order to avoid executing
     the custom action unbeknown to a change that has already taken place, the client has to provide the work package's current lockVersion.
  operationId: Execute_custom_action
  requestBody:
    content:
      application/json:
        schema:
          example:
            _links:
              workPackage:
                href: "/api/v3/work_packages/42"
            lockVersion: '3'
          properties:
            _links:
              properties:
                workPackage:
                  properties:
                    href:
                      type: string
                  type: object
              type: object
            lockVersion:
              type: string
          type: object
  summary: Execute custom action