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    Cloud Enterprise Network:DescribeGrantRulesToCen

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    Cloud Enterprise Network:DescribeGrantRulesToCen

    Last Updated:Aug 12, 2026

    Queries information about cross-account network instances that are authorized to be associated with a Cloud Enterprise Network (CEN) instance.

    Operation description

    When calling the DescribeGrantRulesToCen operation, make sure that the parameter values you specify are correct. If you specify incorrect parameter values, the operation still returns a RequestId but does not return information about the cross-account network instances that are authorized to be associated with the CEN instance.

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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 region ID of the network instance.

    You can call the DescribeChildInstanceRegions operation to query region IDs.

    cn-hangzhou
    CenId

    string

    Yes

    The instance ID of the CEN instance.

    cen-nye53d7p3hzyu4****
    ProductType

    string

    Yes

    The type of the network instance. Valid values:

    • VPC: virtual private cloud (VPC) instance.

    • VBR: virtual border router (VBR) instance.

    • CCN: Cloud Connect Network instance.

    • VPN: IPsec connection.

    • ECR: Express Connect Router (ECR) instance.

    VPC
    MaxResults

    integer

    No

    • If you do not specify the MaxResults parameter, you do not need to query results in batches. The MaxResults value in the response indicates the total number of entries.

    • If you specify the MaxResults parameter, you need to query results in batches. The MaxResults value specifies the number of entries to return per page. Valid values: 1 to 100. The MaxResults value in the response indicates the number of entries in the current batch. We recommend that you set MaxResults to 20.

    20
    NextToken

    string

    No

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

    • You do not need to specify this parameter for the first request or if no subsequent request exists.

    • If a subsequent request exists, set the value to the NextToken value returned in the previous API call.

    FFmyTO70tTpLG6I3FmYAXGKPd****
    ChildInstanceId

    string

    No

    The instance ID of the network instance to query.

    vpc-rj9gt5nll27onu7****
    ChildInstanceOwnerId

    integer

    No

    The ID of the Alibaba Cloud account to which the network instance belongs.

    1250123456123456
    EnabledIpv6

    boolean

    No

    Specifies whether IPv6 is enabled:

    1. This parameter takes effect only when ProductType is set to "VPC".

    2. A value of true indicates that IPv6 is enabled. A value of false indicates that IPv6 is not enabled. If this parameter is left empty, results are not filtered by this parameter.

    true

    Response elements

    Element

    Type

    Description

    Example

    object

    The response parameters.

    RequestId

    string

    The request ID.

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

    object

    GrantRule

    array<object>

    The authorization information.

    object

    The network instance information.

    ChildInstanceType

    string

    The type of the network instance. Valid values:

    • VPC: A VPC.

    • VBR: A VBR.

    • CCN: A CCN instance.

    • VPN: An IPsec-VPN 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 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 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 returned.

    1
    MaxResults

    integer

    • If you did not specify the MaxResults request parameter, you do not need to query results in batches. The MaxResults value in the response indicates the total number of entries.

    • If you specified the MaxResults request parameter, you need to query results in batches. The MaxResults value in the response indicates the number of entries in the current batch.

    20
    NextToken

    string

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

    • If NextToken is empty, no subsequent request exists.

    • If NextToken is returned, the value indicates the token for the next query.

    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.