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Resource Management:AttachPolicy

Last Updated:Aug 28, 2026

Attaches a permission policy to an object, which can be a RAM user, RAM user group, or RAM role. After you attach a permission policy to an object, the object has the operation permissions on the resources in a specific resource group or within a specific Alibaba Cloud account.

Operation description

In this example, the policy AdministratorAccess is attached to the RAM user alice@demo.onaliyun.com and takes effect only for resources in the rg-9gLOoK**** resource group.

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Test

RAM authorization

No authorization for this operation. If you encounter issues with this operation, contact technical support.

Request parameters

Parameter

Type

Required

Description

Example

ResourceGroupId

string

Yes

The effective scope of the permission policy. Valid values:

  • ID of a resource group: indicates that the permission policy takes effect for the resources in the resource group.

  • ID of the Alibaba Cloud account to which the authorized object belongs: indicates that the permission policy takes effect for the resources within the Alibaba Cloud account.

rg-9gLOoK****

PolicyType

string

Yes

The type of the permission policy. Valid values:

  • Custom

  • System

System

PolicyName

string

Yes

The name of the permission policy.

The name must be 1 to 128 characters in length and can contain letters, digits, and hyphens (-).

AdministratorAccess

PrincipalType

string

Yes

The type of the object to which you want to attach the permission policy. Valid values:

  • IMSUser: RAM user

  • IMSGroup: RAM user group

  • ServiceRole: RAM role

IMSUser

PrincipalName

string

Yes

The name of the object to which you want to attach the permission policy.

  • If you want to attach the permission policy to a RAM user, specify the name in the @.onaliyun.com format. indicates the name of the RAM user, and indicates the alias of the Alibaba Cloud account to which the RAM user belongs.

  • If you want to attach the permission policy to a RAM user group, specify the name in the @group..onaliyun.com format. indicates the name of the RAM user group, and indicates the alias of the Alibaba Cloud account to which the RAM user group belongs.

  • If you want to attach the permission policy to a RAM role, specify the name in the @role..onaliyunservice.com format. indicates the name of the RAM role, and indicates the alias of the Alibaba Cloud account to which the RAM role belongs.

Note

The alias of an Alibaba Cloud account is a part of the default domain name. You can call the GetDefaultDomain operation to obtain the alias of an Alibaba Cloud account.

alice@demo.onaliyun.com

For more information about common request parameters, see Common parameters.

Response elements

Element

Type

Description

Example

object

The response parameters.

RequestId

string

The request ID.

697852FB-50D7-44D9-9774-530C31EAC572

Examples

Success response

JSON format

{
  "RequestId": "697852FB-50D7-44D9-9774-530C31EAC572"
}

Error codes

HTTP status code

Error code

Error message

Description

400 InvalidParameter.PolicyType The specified policy type is invalid. The specified policy type is invalid.
404 EntityNotExist.Policy The policy does not exist. The policy does not exist.
404 EntityNotExists.ResourceGroup The specified resource group does not exist. You must first create a resource group. The specified resource group does not exist. You must first create a resource group.
409 Invalid.ResourceGroup.Status You cannot perform an operation on a resource group that is being created or deleted. You cannot perform an operation on a resource group that is being created or deleted.

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.