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Virtual Private Cloud:GrantInstanceToCen

Last Updated:Dec 01, 2023

Grants permissions to a Cloud Enterprise Network (CEN) instance.

Operation Description

  • Before you can attach a network instance that belongs to another Alibaba Cloud account to your CEN instance, you must grant permissions to your CEN instance.
Note GrantInstanceToCen is a Virtual Private Cloud (VPC) operation. Therefore, you must use the domain name to call this operation. The API version is 2016-04-28.
  • You cannot repeatedly call the GrantInstanceToCen operation to grant the permissions on a network instance to a CEN instance. The network instance can be a VPC, a virtual border router (VBR), or a Cloud Connect Network (CCN) instance.


You can run this interface directly in OpenAPI Explorer, saving you the trouble of calculating signatures. After running successfully, OpenAPI Explorer can automatically generate SDK code samples.


Authorization information

The following table shows the authorization information corresponding to the API. The authorization information can be used in the Action policy element to grant a RAM user or RAM role the permissions to call this API operation. Description:

  • Operation: the value that you can use in the Action element to specify the operation on a resource.
  • Access level: the access level of each operation. The levels are read, write, and list.
  • Resource type: the type of the resource on which you can authorize the RAM user or the RAM role to perform the operation. Take note of the following items:
    • The required resource types are displayed in bold characters.
    • If the permissions cannot be granted at the resource level, All Resources is used in the Resource type column of the operation.
  • Condition Key: the condition key that is defined by the cloud service.
  • Associated operation: other operations that the RAM user or the RAM role must have permissions to perform to complete the operation. To complete the operation, the RAM user or the RAM role must have the permissions to perform the associated operations.
OperationAccess levelResource typeCondition keyAssociated operation
  • VirtualBorderRouter
  • VPC

Request parameters


The ID of the region where the network instance is deployed.

You can call the DescribeRegions operation to query the most recent region list.


The ID of the network instance.


The type of the network instance. Valid values:

  • VPC
  • VBR

The ID of the CEN instance to which you want to grant permissions.


The user ID (UID) of the Apsara Stack tenant account to which the CEN instance belongs.


The client token that is used to ensure the idempotence of the request.

You can use the client to generate the token, but you must make sure that the token is unique among different requests. The token can contain only ASCII characters.

Note If you do not specify this parameter, the system automatically uses the request ID as the client token. The request ID may be different for each request.

Response parameters


The request ID.


The request ID.



Sample success responses


  "RequestId": "473469C7-AA6F-4DC5-B3DB-A3DC0DE3C83E"

Error codes

HTTP status codeError codeError messageDescription
400IncorrectStatusCurrent Instance status does not support this operation.-
400TaskConflictThe operation is too frequent, TaskConflict.The system is unavailable. Try again later.
400Invalid.GrantCan not grant to other owner cen.You cannot attach the VBR to a CEN instance that belongs to another Alibaba Cloud account.
404InvalidInstanceId.NotFoundSpecified Instance does not exist.The instance does not exist. Check the instance ID.
404InstanceType.InvalidSpecified type is not valid.-
404QuotaExceeded.CbnGrantRulescbn grantRules per instance quota exceed-
404InvalidRegionId.NotFoundThe RegionId provided does not exist in our records.The RegionId parameter is set to an invalid value. Specify a valid value and try again.
404InvalidVbr.NotFoundSpecified vbr does not exist.-

For a list of error codes, visit the Service error codes.