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    Cloud Enterprise Network:CreateCenChildInstanceRouteEntryToCen

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    Cloud Enterprise Network:CreateCenChildInstanceRouteEntryToCen

    Last Updated:Jul 23, 2026

    Adds a route entry to a network instance by calling the CreateCenChildInstanceRouteEntryToCen operation.

    Operation description

    • The CreateCenChildInstanceRouteEntryToCen operation is not available by default. To use this operation, submit a ticket.

    • The CreateCenChildInstanceRouteEntryToCen operation does not support adding route entries to network instances in an Enterprise Edition transit router.

    • The next hop of the route entry defaults to the regional gateway of Cloud Enterprise Network (CEN) and cannot be modified.

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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:CreateCenChildInstanceRouteEntryToCen

    create

    *CenInstance

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

    		 None None

    Request parameters

    Parameter

    Type

    Required

    Description

    Example
    CenId

    string

    Yes

    The CEN instance ID.

    cen-7febra5nqj7jjh****
    ChildInstanceId

    string

    Yes

    The network instance ID.

    vpc-k1alm2jbuwibhxtx2****
    ChildInstanceType

    string

    Yes

    The type of the network instance. Valid values:

    • VPC: a virtual private cloud (VPC) instance.

    • VBR: a virtual border router (VBR) instance.

    VPC
    ChildInstanceRegionId

    string

    Yes

    The region ID of the network instance.

    You can call the DescribeRegions operation to query the region ID.

    ap-southeast-5
    ChildInstanceAliUid

    integer

    No

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

    Note

    This parameter is required if the network instance belongs to a different Alibaba Cloud account.

    1787100000000000
    RouteTableId

    string

    Yes

    The ID of the route table of the network instance.

    vtb-k1aa8ulqs39f86op8****
    DestinationCidrBlock

    string

    Yes

    The destination CIDR block of the route entry.

    The destination CIDR block must be in CIDR format. Example: 192.168.10.0/24.

    192.168.22.0/24

    Response elements

    Element

    Type

    Description

    Example

    object

    RequestId

    string

    The request ID.

    437ED236-BE47-5370-8695-15C58C7A8014

    Examples

    Success response

    JSON format

    {
  "RequestId": "437ED236-BE47-5370-8695-15C58C7A8014"
}

    Error codes

    HTTP status code

    Error code

    Error message

    Description
    400 OperationFailed.TransitRouterType The specified TransitRouterType does not support the operation. The error message returned because this operation is not supported by the specified type of transit router.
    400 InvalidParameter Invalid parameter. The error message returned because the parameter is set to an invalid value.
    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.