Grant an appRoleAssignment to a service principal

Namespace: microsoft.graph

Assign an app role to a client service principal.

App roles that are assigned to service principals are also known as application permissions. Application permissions can be granted directly with app role assignments, or through a consent experience.

To grant an app role assignment to a client service principal, you need three identifiers:

  • principalId: The id of the client service principal to which you are assigning the app role.
  • resourceId: The id of the resource servicePrincipal (the API) which has defined the app role (the application permission).
  • appRoleId: The id of the appRole (defined on the resource service principal) to assign to the client service principal.

Permissions

One of the following permissions is required to call this API. To learn more, including how to choose permissions, see Permissions.

Permission type Permissions (from least to most privileged)
Delegated (work or school account) AppRoleAssignment.ReadWrite.All, Directory.ReadWrite.All, Directory.AccessAsUser.All
Delegated (personal Microsoft account) Not supported.
Application AppRoleAssignment.ReadWrite.All, Directory.ReadWrite.All

HTTP request

POST /servicePrincipals/{id}/appRoleAssignments

Note

As a best practice, we recommend creating app role assignments through the appRoleAssignedTo relationship of the resource service principal, instead of the appRoleAssignments relationship of the assigned user, group, or service principal.

Request headers

Name Description
Authorization Bearer {token}. Required.
Content-type application/json. Required.

Request body

In the request body, supply a JSON representation of an appRoleAssignment object.

Response

If successful, this method returns a 201 Created response code and an appRoleAssignment object in the response body.

Examples

Request

Here is an example of the request.

POST https://graph.microsoft.com/v1.0/servicePrincipals/9028d19c-26a9-4809-8e3f-20ff73e2d75e/appRoleAssignments
Content-Type: application/json

{
  "principalId": "9028d19c-26a9-4809-8e3f-20ff73e2d75e",
  "resourceId": "8fce32da-1246-437b-99cd-76d1d4677bd5",
  "appRoleId": "498476ce-e0fe-48b0-b801-37ba7e2685c6"
}

In this example, note that the value used as the service principal id in the request URL (9028d19c-26a9-4809-8e3f-20ff73e2d75e) is the same as the principalId property in the body. The resourceId value is the id of the resource service principal (the API).

Response

Here is an example of the response.

Note: The response object shown here might be shortened for readability.

HTTP/1.1 201 Created
Content-type: application/json

{
  "@odata.context": "https://graph.microsoft.com/v1.0/$metadata#appRoleAssignments/$entity",
  "id": "2jLOj0YSe0OZzXbR1Gd71fDqFUrPM1xIgUfvWBHJ9n0",
  "createdDateTime": "2021-02-15T16:39:38.2975029Z",
  "appRoleId": "498476ce-e0fe-48b0-b801-37ba7e2685c6",
  "principalDisplayName": "Fabrikam App",
  "principalId": "9028d19c-26a9-4809-8e3f-20ff73e2d75e",
  "principalType": "ServicePrincipal",
  "resourceDisplayName": "Microsoft Graph",
  "resourceId": "8fce32da-1246-437b-99cd-76d1d4677bd5"
}