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Cloud Enterprise Network:DeleteCenChildInstanceRouteEntryToAttachment

Last Updated:Aug 12, 2026

Deletes a route entry from a network instance connected to an Enterprise Edition transit router.

Operation description

  • Only route entries whose next hop is a transit router connection (network instance connection) in Virtual Private Cloud (VPC) instances or Virtual Border Router (VBR) instances can be deleted.

  • DeleteCenChildInstanceRouteEntryToAttachment is an asynchronous operation. After you send a request, the system returns a RequestId but the route entry is not yet deleted. The deletion task continues to run in the background. You can call the DescribeRouteEntryList operation of VPC to query the status of the route entry.
    • If the route entry is in the Deleting state, the route entry is being deleted. In this state, you can only query the route entry but cannot perform other operations on it.

    • If the specified route entry cannot be found, the route entry is deleted.

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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:DeleteCenChildInstanceRouteEntryToAttachment

delete

*CenInstance

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

None None

Request parameters

Parameter

Type

Required

Description

Example

ClientToken

string

No

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 ClientToken value can contain only ASCII characters.

Note

If you do not specify this parameter, the system uses the RequestId as the ClientToken. The RequestId of each API request may be different.

02fb3da4-130e-11e9-8e44-001****

DryRun

boolean

No

Specifies whether to perform a dry run. The dry run checks items such as permissions and instance status. Valid values:

  • false (default): Sends a normal request. If the request passes the check, the route entry of the network instance is deleted.

  • true: Sends a check request. Only the check is performed, and the route entry of the network instance is not deleted. The check items include whether required parameters are specified and the request format. If the check fails, the corresponding error is returned. If the check succeeds, the corresponding request ID is returned.

Note

This parameter is not yet available.

false

CenId

string

Yes

The instance ID of the Cloud Enterprise Network (CEN).

cen-wgcl0ik5o8jakq****

TransitRouterAttachmentId

string

Yes

The ID of the network instance connection.

tr-attach-r1qhupkc19iadz****

RouteTableId

string

Yes

The ID of the route table of the network instance.

vtb-bp1osd9opvegfpowc****

DestinationCidrBlock

string

Yes

The destination CIDR block of the route entry.

10.0.1.0/24

Response elements

Element

Type

Description

Example

object

The response parameters.

RequestId

string

The request ID.

250E717B-9823-5FD8-A1C6-5714234FB825

Examples

Success response

JSON format

{
  "RequestId": "250E717B-9823-5FD8-A1C6-5714234FB825"
}

Error codes

HTTP status code

Error code

Error message

Description

400 InvalidRouteEntry.NotFound Route entry not exists. The error message returned because the route entry does not exist.
400 IncorrectStatus.VpcRouteEntry The resource is not in a valid state for the attachment operation. The error message returned because the status of the VPC route entry does not support this operation. Try again later.
400 InvalidTransitRouterAttachmentId.NotFound TransitRouterAttachmentId is not found. The error message returned because the ID of the network instance does not exist.
400 IncorrectStatus.Vpc The resource is not in a valid state for the attachment operation. The error message returned because the status of the VPC does not support this operation. Try again later.
400 InvalidCidrBlock.Malformed The specified CIDR block is not valid. The error message returned because the specified CIDR block is invalid.
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.
400 InvalidParameter.TransitRouterAttachmentId The specified parameter TransitRouterAttachmentId is invalid.
400 InvalidParameter.CenId The specified parameter CenId is invalid.
400 InvalidParameter.RouteTableId The specified parameter RouteTableId is invalid. The parameter RouteTableId entered is illegal.

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.