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Cloud Enterprise Network:DescribeGrantRulesToCen

Last Updated:Mar 25, 2026

Call the DescribeGrantRulesToCen API to query the cross-account network instances that have been authorized for a CEN instance.

Operation description

Calling the DescribeGrantRulesToCen interface with invalid parameters returns a RequestId but provides no information about the cross-account network instances that the Cloud Enterprise Network (CEN) instance is permitted to access.

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RAM authorization

The table below describes the authorization required to call this API. You can define it in a Resource Access Management (RAM) policy. The table's columns are detailed below:

  • Action: The actions can be used in the Action element of RAM permission policy statements to grant permissions to perform the operation.

  • API: The API that you can call to perform the action.

  • Access level: The predefined level of access granted for each API. Valid values: create, list, get, update, and delete.

  • Resource type: The type of the resource that supports authorization to perform the action. It indicates if the action supports resource-level permission. The specified resource must be compatible with the action. Otherwise, the policy will be ineffective.

    • For APIs with resource-level permissions, required resource types are marked with an asterisk (*). Specify the corresponding Alibaba Cloud Resource Name (ARN) in the Resource element of the policy.

    • For APIs without resource-level permissions, it is shown as All Resources. Use an asterisk (*) in the Resource element of the policy.

  • Condition key: The condition keys defined by the service. The key allows for granular control, applying to either actions alone or actions associated with specific resources. In addition to service-specific condition keys, Alibaba Cloud provides a set of common condition keys applicable across all RAM-supported services.

  • Dependent action: The dependent actions required to run the action. To complete the action, the RAM user or the RAM role must have the permissions to perform all dependent actions.

Action

Access level

Resource type

Condition key

Dependent action

cen:DescribeGrantRulesToCen

get

*CenInstance

acs:cen:*:{#accountId}:ceninstance/{#ceninstanceId}

None None

Request parameters

Parameter

Type

Required

Description

Example

RegionId

string

No

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

You can call the DescribeChildInstanceRegions operation to query region IDs.

cn-hangzhou

CenId

string

Yes

The ID of the Cloud Enterprise Network instance.

cen-nye53d7p3hzyu4****

ProductType

string

Yes

The type of the network instance. Valid values:

  • VPC: a VPC.

  • VBR: a VBR.

  • CCN: a CCN instance.

  • VPN: an IPsec connection.

  • ECR: an Express Connect Router instance.

VPC

MaxResults

integer

No

  • If you omit this parameter, all entries are returned. The MaxResults value in the response then indicates the total number of entries.

  • If you set this parameter, the response is paginated. The MaxResults value specifies the number of entries to return on each page. Valid values: 1 to 100. The MaxResults value in the response indicates the number of entries on the current page. Setting MaxResults to 20 is recommended.

20

NextToken

string

No

The token used to retrieve the next page of results.

  • Omit this parameter for the first request.

  • Set this parameter to the NextToken value from the previous response to retrieve the next page of results.

FFmyTO70tTpLG6I3FmYAXGKPd****

ChildInstanceId

string

No

The ID of the network instance to query.

vpc-rj9gt5nll27onu7****

ChildInstanceOwnerId

integer

No

The ID of the Alibaba Cloud account (root account) that owns the network instance.

1250123456123456

EnabledIpv6

boolean

No

Specifies whether IPv6 is enabled.

  1. This parameter applies only when ProductType is set to VPC.

  2. Set to true to return only VPCs with IPv6 enabled, or false to return only those with IPv6 disabled. If you omit this parameter, the response is not filtered by the IPv6 status.

true

Response elements

Element

Type

Description

Example

object

The data returned.

RequestId

string

The request ID.

4906B209-8613-5C19-9CC9-B7A3FFDA731C

GrantRules

object

The grant rules.

GrantRule

array<object>

A list of grant rules.

object

The details of the network instance.

ChildInstanceType

string

The type of the network instance. Valid values:

  • VPC: A VPC.

  • VBR: A VBR.

  • CCN: A CCN.

  • VPN: An IPsec connection.

  • ECR: An ECR.

VPC

ChildInstanceRegionId

string

The region ID of the network instance.

cn-hangzhou

ChildInstanceOwnerId

integer

The ID of the Alibaba Cloud account (primary account) that owns the network instance.

1250123456123456

ChildInstanceId

string

The ID of the network instance.

vpc-bp1rgeww9mdstuuar****

CenId

string

The ID of the CEN instance.

cen-nye53d7p3hzyu4****

OrderType

string

The payer for the network instance. Valid values:

  • PayByCenOwner: The account that owns the CEN instance pays the transit router connection and data transfer fees for the network instance.

  • PayByResourceOwner: The account that owns the network instance pays the transit router connection and data transfer fees for the network instance.

PayByCenOwner

EffectiveOrderType

string

The effective payer for the network instance.

PayByCenOwner

CenOwnerId

integer

The ID of the Alibaba Cloud account (primary account) that owns the CEN instance.

1210123456123456

CreateTime

integer

The time when the permission was granted.

The time is in UTC and follows the ISO 8601 standard.

2024-01-24T16:27Z

TotalCount

integer

The total number of entries.

1

MaxResults

integer

  • The maximum number of entries to return per page.

  • This value is the same as the MaxResults value that you specified in the request.

20

NextToken

string

The pagination token that is used in the next request to retrieve a new page of results.

  • If the NextToken parameter is empty, no more results are available.

  • To retrieve the next page, set the NextToken request parameter to this value.

FFmyTO70tTpLG6I3FmYAXGKPd****

Examples

Success response

JSON format

{
  "RequestId": "4906B209-8613-5C19-9CC9-B7A3FFDA731C",
  "GrantRules": {
    "GrantRule": [
      {
        "ChildInstanceType": "VPC",
        "ChildInstanceRegionId": "cn-hangzhou",
        "ChildInstanceOwnerId": 1250123456123456,
        "ChildInstanceId": "vpc-bp1rgeww9mdstuuar****",
        "CenId": "cen-nye53d7p3hzyu4****",
        "OrderType": "PayByCenOwner",
        "EffectiveOrderType": "PayByCenOwner",
        "CenOwnerId": 1210123456123456,
        "CreateTime": 0
      }
    ]
  },
  "TotalCount": 1,
  "MaxResults": 20,
  "NextToken": "FFmyTO70tTpLG6I3FmYAXGKPd****"
}

Error codes

HTTP status code

Error code

Error message

Description

400 InvalidParameter Invalid parameter. The error message returned because the parameter is set to an invalid value.
400 MissingParameter Missing parameter. The error message returned because one or more required parameters are not set.
400 InvalidParameter.RegionId The specified Region Id is invalid. The error message returned because the specified region ID is invalid.
400 IllegalParam.NextToken NextToken is illegal The error message returned because the NextToken parameter is set to an invalid value.
400 MissingParameter.RegionId Missing RegionId parameter. Missing RegionId parameter.
400 Unauthorized The AccessKeyId is unauthorized. The error message returned because you do not have the permissions to perform this operation.

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.