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Cloud Enterprise Network:DeleteTransitRouterEcrAttachment

Last Updated:Aug 28, 2026

Deletes an Express Connect Router (ECR) connection from an Enterprise Edition transit router.

Operation description

Asynchronous operation. Returns a request ID immediately and deletes the connection in the background. Call ListTransitRouterEcrAttachments to check the connection status.

A connection in the Detaching state is being deleted. You can query it but cannot perform other operations. Deletion is complete when the connection no longer appears in query results. Ensure all request parameters are valid before calling this operation. Invalid parameters return a request ID without deleting the connection.

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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:DeleteTransitRouterEcrAttachment

delete

*TransitRouterEcrAttachment

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

None None

Request parameters

Parameter

Type

Required

Description

Example

ClientToken

string

No

Client token for idempotence.

Must be unique across requests and contain only ASCII characters.

Note

If unspecified, the system uses the request ID as the client token. The request ID may differ across requests.

02fb3da4****

TransitRouterAttachmentId

string

Yes

The ID of the ECR connection.

tr-attach-r6g0m3epjehw57****

DryRun

boolean

No

Whether to perform a dry run. Valid values:

  • false (default): sends the request after validation.

  • true: validates the request without executing it. Checks parameter values, syntax, and service limits. Returns an error code on failure or a request ID on success.

false

Force

boolean

No

Whether to force-delete the ECR connection. Valid values:

  • false (default): checks for dependencies (associated forwarding and route learning). Returns an error if dependencies exist.

  • true: deletes the ECR connection and all dependent resources.

false

Response elements

Element

Type

Description

Example

object

RequestId

string

The request ID.

F7DDDC17-FA06-4AC2-8F35-59D2470FCFC1

Examples

Success response

JSON format

{
  "RequestId": "F7DDDC17-FA06-4AC2-8F35-59D2470FCFC1"
}

Error codes

HTTP status code

Error code

Error message

Description

400 OperationFailed.RouteTableAssociationExist Operation failed because TransitRouterRouteTable exists You cannot delete the connection while it is associated with a route table.
400 OperationFailed.RouteEntryExist Operation failed because the TransitRouterAttachment exists in RouteTable.
400 OperationFailed.RouteTablePropagationExist The specified TransitRouterAttachment has configured RouteTablePropagation. Please remove the configuration first. A route learning correlation is configured for this connection. Remove the correlation and try again.
400 OperationFailed.FlowLogExistOrNisOpened Operation failed because FlowLog exists or Nis opened. This operation is not supported when a flow log exists or the NIS service is activated.
400 OperationUnsupported.TransitRouterType The specified TransitRouterType does not support the operation. This operation is not supported by the specified transit router type.
400 OperationFailed.NotSupportForceDelete Not support force delete attachment. Force deletion is not supported for this attachment.
400 InvalidTransitRouterAttachmentId.NotFound The TransitRouterAttachmentId is not found. The specified TransitRouterAttachmentId does not exist.
400 OperationFailed.PrefixListExist Operation failed because PrefixList exists. A prefix list is associated with this connection.
400 InvalidParameter Invalid parameter. A parameter is set to an invalid value.
400 Unauthorized The AccessKeyId is unauthorized. You do not have the permissions to perform this operation.
400 IncorrectStatus.EcrResource The ECR resource is not in a valid state for the attachment operation. The ECR resource is not in a valid state for the attachment operation.

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.