List case relations

Namespace: microsoft.graph.security.caseManagement

Important

APIs under the /beta version in Microsoft Graph are subject to change. Use of these APIs in production applications is not supported. To determine whether an API is available in v1.0, use the Version selector.

Get a list of external resource relation objects for a case.

Permissions

Choose the permission or permissions marked as least privileged for this API. Use a higher privileged permission or permissions only if your app requires it. For details about delegated and application permissions, see Permission types. To learn more about these permissions, see the permissions reference.

Permission type	Least privileged permission	Higher privileged permissions
Delegated (work or school account)	Not supported.	Not supported.
Delegated (personal Microsoft account)	Not supported.	Not supported.
Application	Not supported.	Not supported.

Important

For delegated access using work or school accounts, the signed-in user must be assigned a supported Microsoft Entra role or a custom role that grants the permissions required for this operation. This API supports the following built-in roles:

• Security Reader
• Security Operator
• Security Administrator

HTTP request

GET /security/caseManagement/cases/{caseId}/relations

Optional query parameters

This method supports the $select OData query parameter. For general information, see OData query parameters.

Request headers

Name	Description
Authorization	Bearer {token}. Required. Learn more about authentication and authorization.

Request body

Don't supply a request body for this method.

Response

If successful, this method returns a 200 OK response code and a collection of relation objects in the response body.

Examples

Request

The following example shows a request.

GET https://graph.microsoft.com/beta/security/caseManagement/cases/{caseId}/relations

Response

The following example shows the response.

HTTP/1.1 200 OK
Content-Type: application/json

{
  "value": [
    {
      "@odata.type": "#microsoft.graph.security.caseManagement.incidentRelation",
      "id": "790478d8-6402-8452-4584-5d32e6acf31a",
      "createdDateTime": "2026-05-20T11:12:28Z",
      "createdBy": "user@contoso.com",
      "lastModifiedDateTime": "2026-05-20T11:18:45Z",
      "lastModifiedBy": "user@contoso.com",
      "relatedResourceId": "987654321",
      "displayName": "Related incident"
    }
  ]
}