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Cloud Enterprise Network:DeleteTransitRouterVpcAttachment

Last Updated:Sep 02, 2026

Calls the DeleteTransitRouterVpcAttachment operation to delete a virtual private cloud (VPC) connection from an Enterprise Edition transit router.

Operation description

DeleteTransitRouterVpcAttachment is an asynchronous operation. After you send a request, the system returns a RequestId but the VPC connection is not yet deleted. The deletion task continues to run in the background. You can call ListTransitRouterVpcAttachments to query the status of the VPC connection.

  • If the VPC connection is in the Detaching state, the VPC connection is being deleted. In this state, you can only query the VPC connection. You cannot perform other operations on the VPC connection.

  • If the VPC connection cannot be found, the VPC connection is deleted.

When you call DeleteTransitRouterVpcAttachment, make sure that the parameter values you specify are valid. If you specify invalid parameter values, the system still returns a RequestId but does not delete the VPC connection from the Enterprise Edition transit router.

Before you begin

Before you delete a VPC connection, make sure that you have not configured a routing rule to access PrivateZone by using the VPC-connected instance. To delete the routing rule to PrivateZone, see UnroutePrivateZoneInCenToVpc.

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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:DeleteTransitRouterVpcAttachment

delete

*TransitRouterVpcAttachment

acs:cen:*:{#accountId}:centransitrouterattachment/{#centransitrouterattachmentId}

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 client token can contain only ASCII characters.

Note

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

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

TransitRouterAttachmentId

string

Yes

The ID of the VPC connection.

tr-attach-ia340z7xis7t5s****

DryRun

boolean

No

Specifies whether to perform a dry run, including permission and instance status verification. Valid values:

  • false (default): Sends a normal request. If the request passes the check, the VPC connection is deleted.

  • true: Sends a check request. Only the check is performed. The VPC connection is not deleted. The system checks required parameters, request format, and other conditions. If the check fails, the corresponding error is returned. If the check succeeds, the corresponding request ID is returned.

false

Force

boolean

No

Specifies whether to force delete the VPC connection. Valid values:

  • false (default): Before the VPC connection is deleted, the system checks whether related resource dependencies exist, such as associated forwarding and routing learning. If related dependencies exist, the VPC connection is not deleted and the corresponding error is returned.

  • true: When the VPC connection is deleted, all related dependencies are also deleted.

false

Response elements

Element

Type

Description

Example

object

The response.

RequestId

string

The request ID.

7E61D334-4025-41EF-9145-FC327B35301D

Examples

Success response

JSON format

{
  "RequestId": "7E61D334-4025-41EF-9145-FC327B35301D"
}

Error codes

HTTP status code

Error code

Error message

Description

400 OperationFailed.AttachmentReferencedVpcRouteEntryExisted Operation is failed because there is at least one route entry which next hop is the specified attachment. The error message returned because this operation is not supported when a route points to an attachment.
400 OperationFailed.RouteTablePropagationExist The specified TransitRouterAttachment has configured RouteTablePropagation. Please remove the configuration first. The error message returned because you cannot perform the operation when a route learning correlation is configured for the network instance connection. Disassociate from the route learning correlation and try again.
400 OperationFailed.MulticastDomainAssociationExist The specified TransitRouterAttachment has configured MulticastDomainAssociation. Please remove the configuration first. The error message returned because the specified transit router attachment (TransitRouterAttachment) is added to a multicast domain. Remove the attachment from the multicast domain and try again.
400 OperationUnsupported.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 OperationFailed.PrefixListExist Operation failed because PrefixList exists. The error message returned because a prefix list exists.
400 InvalidTransitRouterAttachmentId.NotFound TransitRouterAttachmentId is not found. The error message returned because the ID of the network instance 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 IncorrectStatus.VpcSwitch The resource is not in a valid state for the attachment operation. The error message returned because the status of the vSwitch does not support this operation. Try again later.
400 IncorrectStatus.Vpc The resource is not in a valid state for the operation. The error message returned because the status of the VPC does not support this operation. Try again later.
400 OperationFailed.NotSupportForceDelete Not support force delete attachment. The error message returned because the specified resource cannot be forcefully deleted.
400 IncorrectStatus.VpcRouteTable The VPC route table is not in a desired state. The error message returned because the VPC route table is in an unstable state. Try again later.
400 OperationFailed.RouteEntryExist Failed to delete the instance because a route table entry points to the instance. Failed to delete the instance because one or more routes point to the instance. Delete the routes and try again.
400 OperationFailed.RouteTableAssociationExist Operation failed because there is associated routing table. The network connection deletion failed because there is an associated routing table.
400 IncorrectStatus.VpcResource The resource is not in a valid state for the attachment operation. The error message returned because this operation is not supported when the specified VPC is in an unstable state. Wait until all operations related to the VPC are completed.
400 OperationFailed.FlowLogExistOrNisOpened Operation failed because FlowLog exists or Nis opened. The error message returned because this operation is not supported when a flow log exists or the NIS service is activated.
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 OperationNotPermitted.AttachmentManagedByCloudService The specified Attachment managed by cloud service can only be deleted through cloud service.
400 InvalidParameter.TransitRouterAttachmentId The specified parameter TransitRouterAttachmentId is invalid.

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.