Capacity Reservation Groups - Create Or Update

Service:

Compute

API Version:

2026-03-01

The operation to create or update a capacity reservation group. When updating a capacity reservation group, only tags and sharing profile may be modified. Please refer to https://aka.ms/CapacityReservation for more details.

PUT https://management.azure.com/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/capacityReservationGroups/{capacityReservationGroupName}?api-version=2026-03-01

URI Parameters

Name	In	Required	Type	Description
capacityReservationGroupName	path	True	string	The name of the capacity reservation group.
resourceGroupName	path	True	string minLength: 1 maxLength: 90	The name of the resource group. The name is case insensitive.
subscriptionId	path	True	string minLength: 1	The ID of the target subscription.
api-version	query	True	string minLength: 1	The API version to use for this operation.

Request Body

Name	Required	Type	Description
location	True	string	The geo-location where the resource lives
properties.reservationType		ReservationType	Indicates the type of capacity reservation. Allowed values are 'Block' for block capacity reservations and 'Targeted' for reservations that enable a VM to consume a specific capacity reservation when a capacity reservation group is provided. The reservation type is immutable and cannot be changed after it is assigned.
properties.sharingProfile		ResourceSharingProfile	Specifies the settings to enable sharing across subscriptions for the capacity reservation group resource. The capacity reservation group resource can generally be shared across subscriptions belonging to a single Azure AAD tenant or across AAD tenants if there is a trust relationship established between the tenants. Block capacity reservation does not support sharing across subscriptions. Note: Minimum api-version: 2023-09-01. Please refer to https://aka.ms/computereservationsharing for more details.
tags		object	Resource tags.
zones		string[]	The availability zones.

Responses

Name	Type	Description
200 OK	CapacityReservationGroup	Resource 'CapacityReservationGroup' update operation succeeded
201 Created	CapacityReservationGroup	Resource 'CapacityReservationGroup' create operation succeeded
Other Status Codes	CloudError	An unexpected error response.

Security

azure_auth

Azure Active Directory OAuth2 Flow.

Type: oauth2
Flow: implicit
Authorization URL: https://login.microsoftonline.com/common/oauth2/authorize

Scopes

Name	Description
user_impersonation	impersonate your user account

Examples

Create or update a block capacity reservation group.

Create or update a capacity reservation group.

Create or update a targeted capacity reservation group.

Create or update a block capacity reservation group.

Sample request

HTTP

PUT https://management.azure.com/subscriptions/{subscription-id}/resourceGroups/myResourceGroup/providers/Microsoft.Compute/capacityReservationGroups/blockCapacityReservationGroup?api-version=2026-03-01

{
  "location": "westus",
  "tags": {
    "department": "finance"
  },
  "zones": [
    "1",
    "2"
  ],
  "properties": {
    "reservationType": "Block"
  }
}

Java

import com.azure.resourcemanager.compute.fluent.models.CapacityReservationGroupInner;
import com.azure.resourcemanager.compute.models.ReservationType;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;

/**
 * Samples for CapacityReservationGroups CreateOrUpdate.
 */
public final class Main {
    /*
     * x-ms-original-file: 2026-03-01/capacityReservationExamples/BlockCapacityReservationGroup_CreateOrUpdate.json
     */
    /**
     * Sample code: Create or update a block capacity reservation group.
     * 
     * @param manager Entry point to ComputeManager.
     */
    public static void
        createOrUpdateABlockCapacityReservationGroup(com.azure.resourcemanager.compute.ComputeManager manager) {
        manager.serviceClient().getCapacityReservationGroups().createOrUpdateWithResponse("myResourceGroup",
            "blockCapacityReservationGroup",
            new CapacityReservationGroupInner().withLocation("westus").withTags(mapOf("department", "finance"))
                .withZones(Arrays.asList("1", "2")).withReservationType(ReservationType.BLOCK),
            com.azure.core.util.Context.NONE);
    }

    // Use "Map.of" if available
    @SuppressWarnings("unchecked")
    private static <T> Map<String, T> mapOf(Object... inputs) {
        Map<String, T> map = new HashMap<>();
        for (int i = 0; i < inputs.length; i += 2) {
            String key = (String) inputs[i];
            T value = (T) inputs[i + 1];
            map.put(key, value);
        }
        return map;
    }
}

To use the Azure SDK library in your project, see this documentation. To provide feedback on this code sample, open a GitHub issue

Python

from azure.identity import DefaultAzureCredential

from azure.mgmt.compute import ComputeManagementClient

"""
# PREREQUISITES
    pip install azure-identity
    pip install azure-mgmt-compute
# USAGE
    python block_capacity_reservation_group_create_or_update.py

    Before run the sample, please set the values of the client ID, tenant ID and client secret
    of the AAD application as environment variables: AZURE_CLIENT_ID, AZURE_TENANT_ID,
    AZURE_CLIENT_SECRET. For more info about how to get the value, please see:
    https://docs.microsoft.com/azure/active-directory/develop/howto-create-service-principal-portal
"""


def main():
    client = ComputeManagementClient(
        credential=DefaultAzureCredential(),
        subscription_id="SUBSCRIPTION_ID",
    )

    response = client.capacity_reservation_groups.create_or_update(
        resource_group_name="myResourceGroup",
        capacity_reservation_group_name="blockCapacityReservationGroup",
        parameters={
            "location": "westus",
            "properties": {"reservationType": "Block"},
            "tags": {"department": "finance"},
            "zones": ["1", "2"],
        },
    )
    print(response)


# x-ms-original-file: 2026-03-01/capacityReservationExamples/BlockCapacityReservationGroup_CreateOrUpdate.json
if __name__ == "__main__":
    main()

To use the Azure SDK library in your project, see this documentation. To provide feedback on this code sample, open a GitHub issue

Go

package armcompute_test

import (
	"context"
	"log"

	"github.com/Azure/azure-sdk-for-go/sdk/azcore/to"
	"github.com/Azure/azure-sdk-for-go/sdk/azidentity"
	"github.com/Azure/azure-sdk-for-go/sdk/resourcemanager/compute/armcompute/v8"
)

// Generated from example definition: 2026-03-01/capacityReservationExamples/BlockCapacityReservationGroup_CreateOrUpdate.json
func ExampleCapacityReservationGroupsClient_CreateOrUpdate_createOrUpdateABlockCapacityReservationGroup() {
	cred, err := azidentity.NewDefaultAzureCredential(nil)
	if err != nil {
		log.Fatalf("failed to obtain a credential: %v", err)
	}
	ctx := context.Background()
	clientFactory, err := armcompute.NewClientFactory("{subscription-id}", cred, nil)
	if err != nil {
		log.Fatalf("failed to create client: %v", err)
	}
	res, err := clientFactory.NewCapacityReservationGroupsClient().CreateOrUpdate(ctx, "myResourceGroup", "blockCapacityReservationGroup", armcompute.CapacityReservationGroup{
		Location: to.Ptr("westus"),
		Tags: map[string]*string{
			"department": to.Ptr("finance"),
		},
		Zones: []*string{
			to.Ptr("1"),
			to.Ptr("2"),
		},
		Properties: &armcompute.CapacityReservationGroupProperties{
			ReservationType: to.Ptr(armcompute.ReservationTypeBlock),
		},
	}, nil)
	if err != nil {
		log.Fatalf("failed to finish the request: %v", err)
	}
	// You could use response here. We use blank identifier for just demo purposes.
	_ = res
	// If the HTTP response code is 200 as defined in example definition, your response structure would look as follows. Please pay attention that all the values in the output are fake values for just demo purposes.
	// res = armcompute.CapacityReservationGroupsClientCreateOrUpdateResponse{
	// 	CapacityReservationGroup: armcompute.CapacityReservationGroup{
	// 		Location: to.Ptr("westus"),
	// 		Tags: map[string]*string{
	// 			"department": to.Ptr("finance"),
	// 			"owner": to.Ptr("myCompany"),
	// 		},
	// 		Name: to.Ptr("blockCapacityReservationGroup"),
	// 		ID: to.Ptr("/subscriptions/{subscription-id}/resourceGroups/myResourceGroup/providers/Microsoft.Compute/CapacityReservationGroups/blockCapacityReservationGroup"),
	// 		Zones: []*string{
	// 			to.Ptr("1"),
	// 			to.Ptr("2"),
	// 		},
	// 		Properties: &armcompute.CapacityReservationGroupProperties{
	// 			ReservationType: to.Ptr(armcompute.ReservationTypeBlock),
	// 		},
	// 	},
	// }
}

To use the Azure SDK library in your project, see this documentation. To provide feedback on this code sample, open a GitHub issue

JavaScript

const { ComputeManagementClient } = require("@azure/arm-compute");
const { DefaultAzureCredential } = require("@azure/identity");

/**
 * This sample demonstrates how to the operation to create or update a capacity reservation group. When updating a capacity reservation group, only tags and sharing profile may be modified. Please refer to https://aka.ms/CapacityReservation for more details.
 *
 * @summary the operation to create or update a capacity reservation group. When updating a capacity reservation group, only tags and sharing profile may be modified. Please refer to https://aka.ms/CapacityReservation for more details.
 * x-ms-original-file: 2026-03-01/capacityReservationExamples/BlockCapacityReservationGroup_CreateOrUpdate.json
 */
async function createOrUpdateABlockCapacityReservationGroup() {
  const credential = new DefaultAzureCredential();
  const subscriptionId = "{subscription-id}";
  const client = new ComputeManagementClient(credential, subscriptionId);
  const result = await client.capacityReservationGroups.createOrUpdate(
    "myResourceGroup",
    "blockCapacityReservationGroup",
    {
      location: "westus",
      tags: { department: "finance" },
      zones: ["1", "2"],
      reservationType: "Block",
    },
  );
  console.log(result);
}

To use the Azure SDK library in your project, see this documentation. To provide feedback on this code sample, open a GitHub issue

Sample response

Status code:

201

{
  "name": "blockCapacityReservationGroup",
  "location": "westus",
  "id": "/subscriptions/{subscription-id}/resourceGroups/myResourceGroup/providers/Microsoft.Compute/CapacityReservationGroups/blockCapacityReservationGroup",
  "tags": {
    "department": "finance"
  },
  "zones": [
    "1",
    "2"
  ],
  "properties": {
    "reservationType": "Block"
  }
}

Status code:

200

{
  "location": "westus",
  "tags": {
    "department": "finance",
    "owner": "myCompany"
  },
  "name": "blockCapacityReservationGroup",
  "id": "/subscriptions/{subscription-id}/resourceGroups/myResourceGroup/providers/Microsoft.Compute/CapacityReservationGroups/blockCapacityReservationGroup",
  "zones": [
    "1",
    "2"
  ],
  "properties": {
    "reservationType": "Block"
  }
}

Create or update a capacity reservation group.

Sample request

HTTP

PUT https://management.azure.com/subscriptions/{subscription-id}/resourceGroups/myResourceGroup/providers/Microsoft.Compute/capacityReservationGroups/myCapacityReservationGroup?api-version=2026-03-01

{
  "location": "westus",
  "tags": {
    "department": "finance"
  },
  "zones": [
    "1",
    "2"
  ],
  "properties": {
    "sharingProfile": {
      "subscriptionIds": [
        {
          "id": "/subscriptions/{subscription-id1}"
        },
        {
          "id": "/subscriptions/{subscription-id2}"
        }
      ]
    }
  }
}

Java

import com.azure.core.management.SubResource;
import com.azure.resourcemanager.compute.fluent.models.CapacityReservationGroupInner;
import com.azure.resourcemanager.compute.models.ResourceSharingProfile;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;

/**
 * Samples for CapacityReservationGroups CreateOrUpdate.
 */
public final class Main {
    /*
     * x-ms-original-file: 2026-03-01/capacityReservationExamples/CapacityReservationGroup_CreateOrUpdate.json
     */
    /**
     * Sample code: Create or update a capacity reservation group.
     * 
     * @param manager Entry point to ComputeManager.
     */
    public static void
        createOrUpdateACapacityReservationGroup(com.azure.resourcemanager.compute.ComputeManager manager) {
        manager.serviceClient().getCapacityReservationGroups().createOrUpdateWithResponse("myResourceGroup",
            "myCapacityReservationGroup",
            new CapacityReservationGroupInner().withLocation("westus").withTags(mapOf("department", "finance"))
                .withZones(Arrays.asList("1", "2"))
                .withSharingProfile(new ResourceSharingProfile()
                    .withSubscriptionIds(Arrays.asList(new SubResource().withId("/subscriptions/{subscription-id1}"),
                        new SubResource().withId("/subscriptions/{subscription-id2}")))),
            com.azure.core.util.Context.NONE);
    }

    // Use "Map.of" if available
    @SuppressWarnings("unchecked")
    private static <T> Map<String, T> mapOf(Object... inputs) {
        Map<String, T> map = new HashMap<>();
        for (int i = 0; i < inputs.length; i += 2) {
            String key = (String) inputs[i];
            T value = (T) inputs[i + 1];
            map.put(key, value);
        }
        return map;
    }
}

To use the Azure SDK library in your project, see this documentation. To provide feedback on this code sample, open a GitHub issue

Python

from azure.identity import DefaultAzureCredential

from azure.mgmt.compute import ComputeManagementClient

"""
# PREREQUISITES
    pip install azure-identity
    pip install azure-mgmt-compute
# USAGE
    python capacity_reservation_group_create_or_update.py

    Before run the sample, please set the values of the client ID, tenant ID and client secret
    of the AAD application as environment variables: AZURE_CLIENT_ID, AZURE_TENANT_ID,
    AZURE_CLIENT_SECRET. For more info about how to get the value, please see:
    https://docs.microsoft.com/azure/active-directory/develop/howto-create-service-principal-portal
"""


def main():
    client = ComputeManagementClient(
        credential=DefaultAzureCredential(),
        subscription_id="SUBSCRIPTION_ID",
    )

    response = client.capacity_reservation_groups.create_or_update(
        resource_group_name="myResourceGroup",
        capacity_reservation_group_name="myCapacityReservationGroup",
        parameters={
            "location": "westus",
            "properties": {
                "sharingProfile": {
                    "subscriptionIds": [
                        {"id": "/subscriptions/{subscription-id1}"},
                        {"id": "/subscriptions/{subscription-id2}"},
                    ]
                }
            },
            "tags": {"department": "finance"},
            "zones": ["1", "2"],
        },
    )
    print(response)


# x-ms-original-file: 2026-03-01/capacityReservationExamples/CapacityReservationGroup_CreateOrUpdate.json
if __name__ == "__main__":
    main()

To use the Azure SDK library in your project, see this documentation. To provide feedback on this code sample, open a GitHub issue

Go

package armcompute_test

import (
	"context"
	"log"

	"github.com/Azure/azure-sdk-for-go/sdk/azcore/to"
	"github.com/Azure/azure-sdk-for-go/sdk/azidentity"
	"github.com/Azure/azure-sdk-for-go/sdk/resourcemanager/compute/armcompute/v8"
)

// Generated from example definition: 2026-03-01/capacityReservationExamples/CapacityReservationGroup_CreateOrUpdate.json
func ExampleCapacityReservationGroupsClient_CreateOrUpdate_createOrUpdateACapacityReservationGroup() {
	cred, err := azidentity.NewDefaultAzureCredential(nil)
	if err != nil {
		log.Fatalf("failed to obtain a credential: %v", err)
	}
	ctx := context.Background()
	clientFactory, err := armcompute.NewClientFactory("{subscription-id}", cred, nil)
	if err != nil {
		log.Fatalf("failed to create client: %v", err)
	}
	res, err := clientFactory.NewCapacityReservationGroupsClient().CreateOrUpdate(ctx, "myResourceGroup", "myCapacityReservationGroup", armcompute.CapacityReservationGroup{
		Location: to.Ptr("westus"),
		Tags: map[string]*string{
			"department": to.Ptr("finance"),
		},
		Zones: []*string{
			to.Ptr("1"),
			to.Ptr("2"),
		},
		Properties: &armcompute.CapacityReservationGroupProperties{
			SharingProfile: &armcompute.ResourceSharingProfile{
				SubscriptionIDs: []*armcompute.SubResource{
					{
						ID: to.Ptr("/subscriptions/{subscription-id1}"),
					},
					{
						ID: to.Ptr("/subscriptions/{subscription-id2}"),
					},
				},
			},
		},
	}, nil)
	if err != nil {
		log.Fatalf("failed to finish the request: %v", err)
	}
	// You could use response here. We use blank identifier for just demo purposes.
	_ = res
	// If the HTTP response code is 200 as defined in example definition, your response structure would look as follows. Please pay attention that all the values in the output are fake values for just demo purposes.
	// res = armcompute.CapacityReservationGroupsClientCreateOrUpdateResponse{
	// 	CapacityReservationGroup: armcompute.CapacityReservationGroup{
	// 		Location: to.Ptr("westus"),
	// 		Tags: map[string]*string{
	// 			"department": to.Ptr("finance"),
	// 			"owner": to.Ptr("myCompany"),
	// 		},
	// 		Name: to.Ptr("myCapacityReservationGroup"),
	// 		ID: to.Ptr("/subscriptions/{subscription-id}/resourceGroups/myResourceGroup/providers/Microsoft.Compute/CapacityReservationGroups/myCapacityReservationGroup"),
	// 		Zones: []*string{
	// 			to.Ptr("1"),
	// 			to.Ptr("2"),
	// 		},
	// 		Properties: &armcompute.CapacityReservationGroupProperties{
	// 			SharingProfile: &armcompute.ResourceSharingProfile{
	// 				SubscriptionIDs: []*armcompute.SubResource{
	// 					{
	// 						ID: to.Ptr("/subscriptions/{subscription-id1}"),
	// 					},
	// 					{
	// 						ID: to.Ptr("/subscriptions/{subscription-id2}"),
	// 					},
	// 				},
	// 			},
	// 		},
	// 	},
	// }
}

To use the Azure SDK library in your project, see this documentation. To provide feedback on this code sample, open a GitHub issue

JavaScript

const { ComputeManagementClient } = require("@azure/arm-compute");
const { DefaultAzureCredential } = require("@azure/identity");

/**
 * This sample demonstrates how to the operation to create or update a capacity reservation group. When updating a capacity reservation group, only tags and sharing profile may be modified. Please refer to https://aka.ms/CapacityReservation for more details.
 *
 * @summary the operation to create or update a capacity reservation group. When updating a capacity reservation group, only tags and sharing profile may be modified. Please refer to https://aka.ms/CapacityReservation for more details.
 * x-ms-original-file: 2026-03-01/capacityReservationExamples/CapacityReservationGroup_CreateOrUpdate.json
 */
async function createOrUpdateACapacityReservationGroup() {
  const credential = new DefaultAzureCredential();
  const subscriptionId = "{subscription-id}";
  const client = new ComputeManagementClient(credential, subscriptionId);
  const result = await client.capacityReservationGroups.createOrUpdate(
    "myResourceGroup",
    "myCapacityReservationGroup",
    {
      location: "westus",
      tags: { department: "finance" },
      zones: ["1", "2"],
      sharingProfile: {
        subscriptionIds: [
          { id: "/subscriptions/{subscription-id1}" },
          { id: "/subscriptions/{subscription-id2}" },
        ],
      },
    },
  );
  console.log(result);
}

To use the Azure SDK library in your project, see this documentation. To provide feedback on this code sample, open a GitHub issue

Sample response

Status code:

200

{
  "location": "westus",
  "tags": {
    "department": "finance",
    "owner": "myCompany"
  },
  "name": "myCapacityReservationGroup",
  "id": "/subscriptions/{subscription-id}/resourceGroups/myResourceGroup/providers/Microsoft.Compute/CapacityReservationGroups/myCapacityReservationGroup",
  "zones": [
    "1",
    "2"
  ],
  "properties": {
    "sharingProfile": {
      "subscriptionIds": [
        {
          "id": "/subscriptions/{subscription-id1}"
        },
        {
          "id": "/subscriptions/{subscription-id2}"
        }
      ]
    }
  }
}

Status code:

201

{
  "name": "myCapacityReservationGroup",
  "location": "westus",
  "id": "/subscriptions/{subscription-id}/resourceGroups/myResourceGroup/providers/Microsoft.Compute/CapacityReservationGroups/myCapacityReservationGroup",
  "tags": {
    "department": "finance"
  },
  "zones": [
    "1",
    "2"
  ],
  "properties": {
    "sharingProfile": {
      "subscriptionIds": [
        {
          "id": "/subscriptions/{subscription-id1}"
        },
        {
          "id": "/subscriptions/{subscription-id2}"
        }
      ]
    }
  }
}

Create or update a targeted capacity reservation group.

Sample request

HTTP

PUT https://management.azure.com/subscriptions/{subscription-id}/resourceGroups/myResourceGroup/providers/Microsoft.Compute/capacityReservationGroups/targetedCapacityReservationGroup?api-version=2026-03-01

{
  "location": "westus",
  "tags": {
    "department": "finance"
  },
  "zones": [
    "1",
    "2"
  ],
  "properties": {
    "sharingProfile": {
      "subscriptionIds": [
        {
          "id": "/subscriptions/{subscription-id1}"
        },
        {
          "id": "/subscriptions/{subscription-id2}"
        }
      ]
    },
    "reservationType": "Targeted"
  }
}

Java

import com.azure.core.management.SubResource;
import com.azure.resourcemanager.compute.fluent.models.CapacityReservationGroupInner;
import com.azure.resourcemanager.compute.models.ReservationType;
import com.azure.resourcemanager.compute.models.ResourceSharingProfile;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;

/**
 * Samples for CapacityReservationGroups CreateOrUpdate.
 */
public final class Main {
    /*
     * x-ms-original-file: 2026-03-01/capacityReservationExamples/TargetedCapacityReservationGroup_CreateOrUpdate.json
     */
    /**
     * Sample code: Create or update a targeted capacity reservation group.
     * 
     * @param manager Entry point to ComputeManager.
     */
    public static void
        createOrUpdateATargetedCapacityReservationGroup(com.azure.resourcemanager.compute.ComputeManager manager) {
        manager.serviceClient().getCapacityReservationGroups().createOrUpdateWithResponse("myResourceGroup",
            "targetedCapacityReservationGroup",
            new CapacityReservationGroupInner().withLocation("westus").withTags(mapOf("department", "finance"))
                .withZones(Arrays.asList("1", "2"))
                .withSharingProfile(new ResourceSharingProfile()
                    .withSubscriptionIds(Arrays.asList(new SubResource().withId("/subscriptions/{subscription-id1}"),
                        new SubResource().withId("/subscriptions/{subscription-id2}"))))
                .withReservationType(ReservationType.TARGETED),
            com.azure.core.util.Context.NONE);
    }

    // Use "Map.of" if available
    @SuppressWarnings("unchecked")
    private static <T> Map<String, T> mapOf(Object... inputs) {
        Map<String, T> map = new HashMap<>();
        for (int i = 0; i < inputs.length; i += 2) {
            String key = (String) inputs[i];
            T value = (T) inputs[i + 1];
            map.put(key, value);
        }
        return map;
    }
}

To use the Azure SDK library in your project, see this documentation. To provide feedback on this code sample, open a GitHub issue

Python

from azure.identity import DefaultAzureCredential

from azure.mgmt.compute import ComputeManagementClient

"""
# PREREQUISITES
    pip install azure-identity
    pip install azure-mgmt-compute
# USAGE
    python targeted_capacity_reservation_group_create_or_update.py

    Before run the sample, please set the values of the client ID, tenant ID and client secret
    of the AAD application as environment variables: AZURE_CLIENT_ID, AZURE_TENANT_ID,
    AZURE_CLIENT_SECRET. For more info about how to get the value, please see:
    https://docs.microsoft.com/azure/active-directory/develop/howto-create-service-principal-portal
"""


def main():
    client = ComputeManagementClient(
        credential=DefaultAzureCredential(),
        subscription_id="SUBSCRIPTION_ID",
    )

    response = client.capacity_reservation_groups.create_or_update(
        resource_group_name="myResourceGroup",
        capacity_reservation_group_name="targetedCapacityReservationGroup",
        parameters={
            "location": "westus",
            "properties": {
                "reservationType": "Targeted",
                "sharingProfile": {
                    "subscriptionIds": [
                        {"id": "/subscriptions/{subscription-id1}"},
                        {"id": "/subscriptions/{subscription-id2}"},
                    ]
                },
            },
            "tags": {"department": "finance"},
            "zones": ["1", "2"],
        },
    )
    print(response)


# x-ms-original-file: 2026-03-01/capacityReservationExamples/TargetedCapacityReservationGroup_CreateOrUpdate.json
if __name__ == "__main__":
    main()

To use the Azure SDK library in your project, see this documentation. To provide feedback on this code sample, open a GitHub issue

Go

package armcompute_test

import (
	"context"
	"log"

	"github.com/Azure/azure-sdk-for-go/sdk/azcore/to"
	"github.com/Azure/azure-sdk-for-go/sdk/azidentity"
	"github.com/Azure/azure-sdk-for-go/sdk/resourcemanager/compute/armcompute/v8"
)

// Generated from example definition: 2026-03-01/capacityReservationExamples/TargetedCapacityReservationGroup_CreateOrUpdate.json
func ExampleCapacityReservationGroupsClient_CreateOrUpdate_createOrUpdateATargetedCapacityReservationGroup() {
	cred, err := azidentity.NewDefaultAzureCredential(nil)
	if err != nil {
		log.Fatalf("failed to obtain a credential: %v", err)
	}
	ctx := context.Background()
	clientFactory, err := armcompute.NewClientFactory("{subscription-id}", cred, nil)
	if err != nil {
		log.Fatalf("failed to create client: %v", err)
	}
	res, err := clientFactory.NewCapacityReservationGroupsClient().CreateOrUpdate(ctx, "myResourceGroup", "targetedCapacityReservationGroup", armcompute.CapacityReservationGroup{
		Location: to.Ptr("westus"),
		Tags: map[string]*string{
			"department": to.Ptr("finance"),
		},
		Zones: []*string{
			to.Ptr("1"),
			to.Ptr("2"),
		},
		Properties: &armcompute.CapacityReservationGroupProperties{
			SharingProfile: &armcompute.ResourceSharingProfile{
				SubscriptionIDs: []*armcompute.SubResource{
					{
						ID: to.Ptr("/subscriptions/{subscription-id1}"),
					},
					{
						ID: to.Ptr("/subscriptions/{subscription-id2}"),
					},
				},
			},
			ReservationType: to.Ptr(armcompute.ReservationTypeTargeted),
		},
	}, nil)
	if err != nil {
		log.Fatalf("failed to finish the request: %v", err)
	}
	// You could use response here. We use blank identifier for just demo purposes.
	_ = res
	// If the HTTP response code is 200 as defined in example definition, your response structure would look as follows. Please pay attention that all the values in the output are fake values for just demo purposes.
	// res = armcompute.CapacityReservationGroupsClientCreateOrUpdateResponse{
	// 	CapacityReservationGroup: armcompute.CapacityReservationGroup{
	// 		Location: to.Ptr("westus"),
	// 		Tags: map[string]*string{
	// 			"department": to.Ptr("finance"),
	// 			"owner": to.Ptr("myCompany"),
	// 		},
	// 		Name: to.Ptr("targetedCapacityReservationGroup"),
	// 		ID: to.Ptr("/subscriptions/{subscription-id}/resourceGroups/myResourceGroup/providers/Microsoft.Compute/CapacityReservationGroups/targetedCapacityReservationGroup"),
	// 		Zones: []*string{
	// 			to.Ptr("1"),
	// 			to.Ptr("2"),
	// 		},
	// 		Properties: &armcompute.CapacityReservationGroupProperties{
	// 			SharingProfile: &armcompute.ResourceSharingProfile{
	// 				SubscriptionIDs: []*armcompute.SubResource{
	// 					{
	// 						ID: to.Ptr("/subscriptions/{subscription-id1}"),
	// 					},
	// 					{
	// 						ID: to.Ptr("/subscriptions/{subscription-id2}"),
	// 					},
	// 				},
	// 			},
	// 			ReservationType: to.Ptr(armcompute.ReservationTypeTargeted),
	// 		},
	// 	},
	// }
}

To use the Azure SDK library in your project, see this documentation. To provide feedback on this code sample, open a GitHub issue

JavaScript

const { ComputeManagementClient } = require("@azure/arm-compute");
const { DefaultAzureCredential } = require("@azure/identity");

/**
 * This sample demonstrates how to the operation to create or update a capacity reservation group. When updating a capacity reservation group, only tags and sharing profile may be modified. Please refer to https://aka.ms/CapacityReservation for more details.
 *
 * @summary the operation to create or update a capacity reservation group. When updating a capacity reservation group, only tags and sharing profile may be modified. Please refer to https://aka.ms/CapacityReservation for more details.
 * x-ms-original-file: 2026-03-01/capacityReservationExamples/TargetedCapacityReservationGroup_CreateOrUpdate.json
 */
async function createOrUpdateATargetedCapacityReservationGroup() {
  const credential = new DefaultAzureCredential();
  const subscriptionId = "{subscription-id}";
  const client = new ComputeManagementClient(credential, subscriptionId);
  const result = await client.capacityReservationGroups.createOrUpdate(
    "myResourceGroup",
    "targetedCapacityReservationGroup",
    {
      location: "westus",
      tags: { department: "finance" },
      zones: ["1", "2"],
      sharingProfile: {
        subscriptionIds: [
          { id: "/subscriptions/{subscription-id1}" },
          { id: "/subscriptions/{subscription-id2}" },
        ],
      },
      reservationType: "Targeted",
    },
  );
  console.log(result);
}

To use the Azure SDK library in your project, see this documentation. To provide feedback on this code sample, open a GitHub issue

Sample response

Status code:

201

{
  "name": "targetedCapacityReservationGroup",
  "location": "westus",
  "id": "/subscriptions/{subscription-id}/resourceGroups/myResourceGroup/providers/Microsoft.Compute/CapacityReservationGroups/targetedCapacityReservationGroup",
  "tags": {
    "department": "finance"
  },
  "zones": [
    "1",
    "2"
  ],
  "properties": {
    "sharingProfile": {
      "subscriptionIds": [
        {
          "id": "/subscriptions/{subscription-id1}"
        },
        {
          "id": "/subscriptions/{subscription-id2}"
        }
      ]
    },
    "reservationType": "Targeted"
  }
}

Status code:

200

{
  "location": "westus",
  "tags": {
    "department": "finance",
    "owner": "myCompany"
  },
  "name": "targetedCapacityReservationGroup",
  "id": "/subscriptions/{subscription-id}/resourceGroups/myResourceGroup/providers/Microsoft.Compute/CapacityReservationGroups/targetedCapacityReservationGroup",
  "zones": [
    "1",
    "2"
  ],
  "properties": {
    "sharingProfile": {
      "subscriptionIds": [
        {
          "id": "/subscriptions/{subscription-id1}"
        },
        {
          "id": "/subscriptions/{subscription-id2}"
        }
      ]
    },
    "reservationType": "Targeted"
  }
}

Definitions

Name	Description
ApiError	Api error.
ApiErrorBase	Api error base.
CapacityReservationGroup	Specifies information about the capacity reservation group that the capacity reservations should be assigned to. Currently, a capacity reservation can only be added to a capacity reservation group at creation time. An existing capacity reservation cannot be added or moved to another capacity reservation group.
CapacityReservationGroupInstanceView
CapacityReservationInstanceViewWithName	The instance view of a capacity reservation that includes the name of the capacity reservation. It is used for the response to the instance view of a capacity reservation group.
CapacityReservationUtilization	Represents the capacity reservation utilization in terms of resources allocated.
CloudError	An error response from the Compute service.
createdByType	The type of identity that created the resource.
InnerError	Inner error details.
InstanceViewStatus	Instance view status.
ReservationType	Indicates the type of capacity reservation. Allowed values are 'Block' for block capacity reservations and 'Targeted' for reservations that enable a VM to consume a specific capacity reservation when a capacity reservation group is provided. The reservation type is immutable and cannot be changed after it is assigned.
ResourceSharingProfile
StatusLevelTypes	The level code.
SubResource
SubResourceReadOnly
systemData	Metadata pertaining to creation and last modification of the resource.

ApiError

Object

Api error.

Name	Type	Description
code	string	The error code.
details	ApiErrorBase[]	The Api error details
innererror	InnerError	The Api inner error
message	string	The error message.
target	string	The target of the particular error.

ApiErrorBase

Object

Api error base.

Name	Type	Description
code	string	The error code.
message	string	The error message.
target	string	The target of the particular error.

CapacityReservationGroup

Object

Specifies information about the capacity reservation group that the capacity reservations should be assigned to. Currently, a capacity reservation can only be added to a capacity reservation group at creation time. An existing capacity reservation cannot be added or moved to another capacity reservation group.

Name	Type	Description
id	string	Fully qualified resource ID for the resource. Ex - /subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/{resourceProviderNamespace}/{resourceType}/{resourceName}
location	string	The geo-location where the resource lives
name	string	The name of the resource
properties.capacityReservations	SubResourceReadOnly[]	A list of all capacity reservation resource ids that belong to capacity reservation group.
properties.instanceView	CapacityReservationGroupInstanceView	The capacity reservation group instance view which has the list of instance views for all the capacity reservations that belong to the capacity reservation group.
properties.reservationType	ReservationType	Indicates the type of capacity reservation. Allowed values are 'Block' for block capacity reservations and 'Targeted' for reservations that enable a VM to consume a specific capacity reservation when a capacity reservation group is provided. The reservation type is immutable and cannot be changed after it is assigned.
properties.sharingProfile	ResourceSharingProfile	Specifies the settings to enable sharing across subscriptions for the capacity reservation group resource. The capacity reservation group resource can generally be shared across subscriptions belonging to a single Azure AAD tenant or across AAD tenants if there is a trust relationship established between the tenants. Block capacity reservation does not support sharing across subscriptions. Note: Minimum api-version: 2023-09-01. Please refer to https://aka.ms/computereservationsharing for more details.
properties.virtualMachinesAssociated	SubResourceReadOnly[]	A list of references to all virtual machines associated to the capacity reservation group.
systemData	systemData	Azure Resource Manager metadata containing createdBy and modifiedBy information.
tags	object	Resource tags.
type	string	The type of the resource. E.g. "Microsoft.Compute/virtualMachines" or "Microsoft.Storage/storageAccounts"
zones	string[]	The availability zones.

CapacityReservationGroupInstanceView

Object

Name	Type	Description
capacityReservations	CapacityReservationInstanceViewWithName[]	List of instance view of the capacity reservations under the capacity reservation group.
sharedSubscriptionIds	SubResourceReadOnly[]	List of the subscriptions that the capacity reservation group is shared with. Note: Minimum api-version: 2023-09-01. Please refer to https://aka.ms/computereservationsharing for more details.

CapacityReservationInstanceViewWithName

Object

The instance view of a capacity reservation that includes the name of the capacity reservation. It is used for the response to the instance view of a capacity reservation group.

Name	Type	Description
name	string	The name of the capacity reservation.
statuses	InstanceViewStatus[]	The resource status information.
utilizationInfo	CapacityReservationUtilization	Unutilized capacity of the capacity reservation.

CapacityReservationUtilization

Object

Represents the capacity reservation utilization in terms of resources allocated.

Name	Type	Description
currentCapacity	integer (int32)	The value provides the current capacity of the VM size which was reserved successfully and for which the customer is getting billed. Minimum api-version: 2022-08-01.
virtualMachinesAllocated	SubResourceReadOnly[]	A list of all virtual machines resource ids allocated against the capacity reservation.

CloudError

Object

An error response from the Compute service.

Name	Type	Description
error	ApiError	Api error.

createdByType

Enumeration

The type of identity that created the resource.

Value	Description
User
Application
ManagedIdentity
Key

InnerError

Object

Inner error details.

Name	Type	Description
errordetail	string	The internal error message or exception dump.
exceptiontype	string	The exception type.

InstanceViewStatus

Object

Instance view status.

Name	Type	Description
code	string	The status code.
displayStatus	string	The short localizable label for the status.
level	StatusLevelTypes	The level code.
message	string	The detailed status message, including for alerts and error messages.
time	string (date-time)	The time of the status.

ReservationType

Enumeration

Indicates the type of capacity reservation. Allowed values are 'Block' for block capacity reservations and 'Targeted' for reservations that enable a VM to consume a specific capacity reservation when a capacity reservation group is provided. The reservation type is immutable and cannot be changed after it is assigned.

Value	Description
Targeted	To consume on demand allocated capacity reservation when a capacity reservation group is provided.
Block	To consume scheduled allocated block capacity reservation when a capacity reservation group is provided.

ResourceSharingProfile

Object

Name	Type	Description
subscriptionIds	SubResource[]	Specifies an array of subscription resource IDs that capacity reservation group is shared with. Block Capacity Reservations does not support sharing across subscriptions. Note: Minimum api-version: 2023-09-01. Please refer to https://aka.ms/computereservationsharing for more details.

StatusLevelTypes

Enumeration

The level code.

Value	Description
Info
Warning
Error

SubResource

Object

Name	Type	Description
id	string	Resource Id

SubResourceReadOnly

Object

Name	Type	Description
id	string	Resource Id

systemData

Object

Metadata pertaining to creation and last modification of the resource.

Name	Type	Description
createdAt	string (date-time)	The timestamp of resource creation (UTC).
createdBy	string	The identity that created the resource.
createdByType	createdByType	The type of identity that created the resource.
lastModifiedAt	string (date-time)	The timestamp of resource last modification (UTC)
lastModifiedBy	string	The identity that last modified the resource.
lastModifiedByType	createdByType	The type of identity that last modified the resource.