> ## Documentation Index > Fetch the complete documentation index at: https://docs.lerian.studio/llms.txt > Use this file to discover all available pages before exploring further. # Add Members to a Group > Puts one or more people into a group. `{id}` is the group's `name`, a slug such as `midaz-viewer-group`; each entry in `users` is a user id. Called after a person is created, and whenever someone changes team. Adding somebody already in the group is not an error: the call is idempotent per member, so a partially applied form can safely be submitted again. On success the response has no body (204). Failures: - `400` — `users` is missing or empty. - `404` — no such group in your organization. - `503 IDE-0066` — the identity provider is unavailable (unreachable, too slow to answer, or failing). Nothing about the request was wrong; retry it later. ## OpenAPI ````yaml /en/openapi/v3-current/AM-identity.yaml post /v1/groups/{id}/users openapi: 3.1.0 info: contact: name: Lerian Studio url: https://lerian.studio description: OpenAPI 3.1 surface for the Access Manager identity component. license: name: Lerian Studio General License title: Plugin Access Manager — Identity API version: v1 servers: - url: https://identity.sandbox.lerian.net security: [] tags: - description: >- M2M-only: each plugin declares its own permissions, roles and M2M contract, and the server reconciles them. name: Declarations - description: >- A tenant administrator's customers. Each partner holds what its credentials may DO (permissions, per product) and WHERE they may do it (scope, per product and dimension); an M2M application attached to one is confined to that intersection. Administrator-only: authorized on the "partners" resource, and every route resolves the owning organization from the caller's token. name: Partners paths: /v1/groups/{id}/users: post: tags: - Groups summary: Add Members to a Group description: >- Puts one or more people into a group. `{id}` is the group's `name`, a slug such as `midaz-viewer-group`; each entry in `users` is a user id. Called after a person is created, and whenever someone changes team. Adding somebody already in the group is not an error: the call is idempotent per member, so a partially applied form can safely be submitted again. On success the response has no body (204). Failures: - `400` — `users` is missing or empty. - `404` — no such group in your organization. - `503 IDE-0066` — the identity provider is unavailable (unreachable, too slow to answer, or failing). Nothing about the request was wrong; retry it later. operationId: addGroupMembers parameters: - description: Group ID. in: path name: id required: true schema: description: Group ID. examples: - midaz-viewer-group type: string requestBody: content: application/json: schema: $ref: '#/components/schemas/AssignUsersInput' description: The users to add to the group. required: true responses: '204': description: No Content '400': content: application/json: schema: $ref: '#/components/schemas/HTTPError' description: Bad Request '404': content: application/json: schema: $ref: '#/components/schemas/HTTPError' description: Not Found '422': content: application/problem+json: schema: $ref: '#/components/schemas/Detail' description: Unprocessable Entity '500': content: application/json: schema: $ref: '#/components/schemas/HTTPError' description: Internal Server Error '503': content: application/json: schema: $ref: '#/components/schemas/HTTPError' description: Service Unavailable security: - BearerAuth: [] components: schemas: AssignUsersInput: additionalProperties: false properties: users: description: User identifiers. items: type: string minItems: 1 type: array required: - users type: object HTTPError: additionalProperties: false properties: code: type: string entityType: type: string err: {} message: type: string title: type: string type: object Detail: additionalProperties: true properties: code: description: >- Stable, machine-readable domain error code scoped to the emitting service (format: -NNNN). type: string detail: description: >- A human-readable explanation specific to this occurrence of the problem. examples: - Property foo is required but is missing. type: string errors: description: Optional list of individual error details items: $ref: '#/components/schemas/ErrorDetail' type: - array - 'null' instance: description: >- A URI reference that identifies the specific occurrence of the problem. examples: - https://example.com/error-log/abc123 format: uri type: string status: description: HTTP status code examples: - 400 format: int64 type: integer title: description: >- A short, human-readable summary of the problem type. This value should not change between occurrences of the error. examples: - Bad Request type: string type: default: about:blank description: A URI reference to human-readable documentation for the error. examples: - https://example.com/errors/example format: uri type: string upstream: $ref: '#/components/schemas/Upstream' description: >- RFC 9457 extension member: the error a proxied third-party provider reported. Absent unless the emitting service explicitly surfaced one. type: object ErrorDetail: additionalProperties: false properties: location: description: >- Where the error occurred, e.g. 'body.items[3].tags' or 'path.thing-id' type: string message: description: Error message text type: string value: description: The value at the given location type: object Upstream: additionalProperties: false properties: code: description: The upstream provider's own error code, verbatim. examples: - E4001 type: string message: description: >- The upstream provider's own error message, verbatim (bounded, never its raw response body). examples: - account not found at provider type: string type: object securitySchemes: BearerAuth: bearerFormat: JWT description: JWT bearer token issued by the identity provider. scheme: bearer type: http ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.