Create case relation

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.

Create a concrete external resource relation for a case.

This API is available in the following national cloud deployments.

Global service	US Government L4	US Government L5 (DOD)	China operated by 21Vianet
✅	❌	❌	❌

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 permissions	Higher privileged permissions
Delegated (work or school account)	CaseManagement.ReadWrite.All	Not available.
Delegated (personal Microsoft account)	Not supported.	Not supported.
Application	CaseManagement.ReadWrite.All	Not available.

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:

Global Reader
Security Reader
Security Operator
Security Administrator

HTTP request

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

Request headers

Name	Description
Authorization	Bearer {token}. Required. Learn more about authentication and authorization.
Content-Type	application/json. Required.

Request body

In the request body, supply a JSON representation of a concrete microsoft.graph.security.caseManagement.relation object. The base relation type is abstract and can't be created. Include @odata.type with one of the following supported types:

The required subtype-specific properties are:

Concrete relation type	Required subtype-specific properties
incidentRelation	None.
recommendationRelation	recommendationType
workspaceIndicatorRelation	subscriptionId

You can also supply the following properties as applicable to the selected concrete type.

Property	Type	Description
@odata.type	String	The OData type of the concrete relation. The supported values are `#microsoft.graph.security.caseManagement.incidentRelation`, `#microsoft.graph.security.caseManagement.recommendationRelation`, and `#microsoft.graph.security.caseManagement.workspaceIndicatorRelation`. Required.
recommendationType	String	The recommendation type associated with the linked recommendation. Required for recommendationRelation.
relatedResourceId	String	The identifier of the related external resource. Optional.
resourceGroupName	String	The Azure resource group name. Applies to recommendationRelation and workspaceIndicatorRelation.
subscriptionId	String	The Azure subscription identifier. Required for workspaceIndicatorRelation and supported for recommendationRelation.
workspaceName	String	The Log Analytics workspace name. Applies to workspaceIndicatorRelation.

Response

If successful, this method returns a 201 Created response code and a microsoft.graph.security.caseManagement.relation object in the response body.

Examples

Request

The following example shows a request.

POST https://graph.microsoft.com/beta/security/caseManagement/cases/{caseId}/relations
Content-Type: application/json

{
  "@odata.type": "#microsoft.graph.security.caseManagement.incidentRelation",
  "relatedResourceId": "987654321"
}


// Code snippets are only available for the latest version. Current version is 5.x

// Dependencies
using Microsoft.Graph.Beta.Models.Security.CaseManagement;

var requestBody = new IncidentRelation
{
	OdataType = "#microsoft.graph.security.caseManagement.incidentRelation",
	RelatedResourceId = "987654321",
};

// To initialize your graphClient, see https://learn.microsoft.com/en-us/graph/sdks/create-client?from=snippets&tabs=csharp
var result = await graphClient.Security.CaseManagement.Cases["{case-id}"].Relations.PostAsync(requestBody);

Important

Microsoft Graph SDKs use the v1.0 version of the API by default, and do not support all the types, properties, and APIs available in the beta version. For details about accessing the beta API with the SDK, see Use the Microsoft Graph SDKs with the beta API.

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.



// Code snippets are only available for the latest major version. Current major version is $v0.*

// Dependencies
import (
	  "context"
	  msgraphsdk "github.com/microsoftgraph/msgraph-beta-sdk-go"
	  graphmodelssecuritycasemanagement "github.com/microsoftgraph/msgraph-beta-sdk-go/models/security/casemanagement"
	  //other-imports
)

requestBody := graphmodelssecuritycasemanagement.NewRelation()
relatedResourceId := "987654321"
requestBody.SetRelatedResourceId(&relatedResourceId) 

// To initialize your graphClient, see https://learn.microsoft.com/en-us/graph/sdks/create-client?from=snippets&tabs=go
relations, err := graphClient.Security().CaseManagement().Cases().ByCaseId("case-id").Relations().Post(context.Background(), requestBody, nil)

Important

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.


// Code snippets are only available for the latest version. Current version is 6.x

GraphServiceClient graphClient = new GraphServiceClient(requestAdapter);

com.microsoft.graph.beta.models.security.casemanagement.IncidentRelation relation = new com.microsoft.graph.beta.models.security.casemanagement.IncidentRelation();
relation.setOdataType("#microsoft.graph.security.caseManagement.incidentRelation");
relation.setRelatedResourceId("987654321");
com.microsoft.graph.models.security.casemanagement.Relation result = graphClient.security().caseManagement().cases().byCaseId("{case-id}").relations().post(relation);

Important

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.


const options = {
	authProvider,
};

const client = Client.init(options);

const relation = {
  '@odata.type': '#microsoft.graph.security.caseManagement.incidentRelation',
  relatedResourceId: '987654321'
};

await client.api('/security/caseManagement/cases/{caseId}/relations')
	.version('beta')
	.post(relation);

Important

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.


<?php
use Microsoft\Graph\Beta\GraphServiceClient;
use Microsoft\Graph\Beta\Generated\Models\Security\CaseManagement\IncidentRelation;


$graphServiceClient = new GraphServiceClient($tokenRequestContext, $scopes);

$requestBody = new IncidentRelation();
$requestBody->setOdataType('#microsoft.graph.security.caseManagement.incidentRelation');
$requestBody->setRelatedResourceId('987654321');

$result = $graphServiceClient->security()->caseManagement()->cases()->byCaseId('case-id')->relations()->post($requestBody)->wait();

Important

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.


Import-Module Microsoft.Graph.Beta.Security

$params = @{
	"@odata.type" = "#microsoft.graph.security.caseManagement.incidentRelation"
	relatedResourceId = "987654321"
}

New-MgBetaSecurityCaseManagementCaseRelation -CaseId $caseId -BodyParameter $params

Important

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.


# Code snippets are only available for the latest version. Current version is 1.x
from msgraph_beta import GraphServiceClient
from msgraph_beta.generated.models.security.case_management.incident_relation import IncidentRelation
# To initialize your graph_client, see https://learn.microsoft.com/en-us/graph/sdks/create-client?from=snippets&tabs=python
request_body = IncidentRelation(
	odata_type = "#microsoft.graph.security.caseManagement.incidentRelation",
	related_resource_id = "987654321",
)

result = await graph_client.security.case_management.cases.by_case_id('case-id').relations.post(request_body)

Important

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

Response

The following example shows the response.

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

{
  "@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"
}

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Last updated on 2026-08-20

Create case relation

Permissions

HTTP request

Request headers

Request body

Response

Examples

Request

Response

Feedback

Additional resources