# /api/v3/groups
---
get:
  parameters:
  - description: |-
      JSON specifying sort criteria.
      Accepts the same format as returned by the [queries](#queries) endpoint. Currently supported sorts are:

      + id: Sort by primary key

      + created_at: Sort by group creation datetime

      + updated_at: Sort by the time the group was updated last
    example: '[["id", "asc"]]'
    in: query
    name: sortBy
    required: false
    schema:
      default: '["id", "asc"]'
      type: string
  responses:
    '200':
      content:
        application/hal+json:
          examples:
            response:
              value:
                _embedded:
                  elements:
                  - _links:
                      members:
                      - href: "/api/v3/users/363"
                        title: First user
                      - href: "/api/v3/users/60"
                        title: Second user
                      memberships:
                        href: /api/v3/memberships?filters=[{"principal":{"operator":"=","values":["9"]}}]
                        title: Memberships
                      self:
                        href: "/api/v3/groups/9"
                        title: The group
                    _type: Group
                    createdAt: '2015-09-23T11:06:36Z'
                    id: 9
                    name: The group
                    updatedAt: '2015-09-23T11:06:36Z'
                  - _links:
                      members:
                      - href: "/api/v3/users/343"
                        title: Third user
                      - href: "/api/v3/users/60"
                        title: Second user
                      memberships:
                        href: /api/v3/memberships?filters=[{"principal":{"operator":"=","values":["123"]}}]
                        title: Memberships
                      self:
                        href: "/api/v3/groups/123"
                        title: Another group
                    _type: Group
                    createdAt: '2018-09-23T11:06:36Z'
                    id: 123
                    name: Another group
                    updatedAt: '2019-09-23T11:06:36Z'
                _links:
                  self:
                    href: "/api/v3/groups"
                _type: Collection
                count: 2
                total: 2
          schema:
            "$ref": "../components/schemas/list_groups_model.yml"
      description: OK
      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:** View members or manage members in any project
      headers: {}
  tags:
  - Groups
  description: Returns a collection of groups. The client can choose to filter the
    groups similar to how work packages are filtered. In addition to the provided
    filters, the server will reduce the result set to only contain groups, for which
    the requesting client has sufficient permissions (*view_members*, *manage_members*).
  operationId: List_groups
  summary: List groups
post:
  responses:
    '201':
      content:
        application/hal+json:
          schema:
            "$ref": "../components/schemas/view_group_model.yml"
      description: Created
      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:** Administrator
      headers: {}
    '422':
      content:
        application/hal+json:
          examples:
            response:
              value:
                _embedded:
                  details:
                    attribute: name
                _type: Error
                errorIdentifier: urn:openproject-org:api:v3:errors:PropertyConstraintViolation
                message: Name can't be blank.
      description: |-
        Returned if:

        * a constraint for a property was violated (`PropertyConstraintViolation`)
      headers: {}
  tags:
  - Groups
  description: Creates a new group applying the attributes provided in the body.
  operationId: Create_group
  summary: Create group