Disassociates one or more Server Load Balancer (SLB) instances from a scaling group.


OpenAPI Explorer automatically calculates the signature value. For your convenience, we recommend that you call this operation in OpenAPI Explorer. OpenAPI Explorer dynamically generates the sample code of the operation for different SDKs.

Request parameters

Parameter Type Required Example Description
Action String Yes DetachLoadBalancers

The operation that you want to perform. Set the value to DetachLoadBalancers.

ScalingGroupId String Yes asg-bp1ffogfdauy0jw0****

The ID of the scaling group.

ForceDetach Boolean No false

Specifies whether to remove Elastic Compute Service (ECS) instances in the scaling group from the backend server groups of the SLB instance. Valid values:

  • true
  • false

Default value: false.

ClientToken String No 123e4567-e89b-12d3-a456-42665544****

The client token that is used to ensure the idempotence of the request. You can use the client to generate the value, but you must make sure that it is unique among different requests.

The token can contain only ASCII characters and cannot exceed 64 characters in length. For more information, see How to ensure idempotence.

Async Boolean No false

Specifies whether to perform asynchronous calls when you disassociates an SLB instance from the scaling group. Asynchronous calls ensure the transactional nature of operations. This means that the execution results take effect only if all operations are successfully performed. We recommend that you perform asynchronous calls.

Valid values:

  • true: performs asynchronous calls. The request returns the ID of the scaling activity.
  • false: does not perform asynchronous calls.

Default value: false.

RegionId String No cn-qingdao

The ID of the region where the scaling group resides.

LoadBalancer.N String Yes lb-2zeur05gfs****

The ID of SLB instance N. You can disassociate up to five SLB instances from a scaling group at a time.

Response parameters

Parameter Type Example Description
ScalingActivityId String asa-bp140qd7mak8k63f****

The ID of the scaling activity.

A value of this parameter is returned only when Async is set to true. You can call the DescribeScalingActivities operation to query the returned IDs of the scaling activities and view the execution status of the scaling activities.

RequestId String 473469C7-AA6F-4DC5-B3DB-A3DC0DE3****

The ID of the request.


Sample requests

&<Common request parameters>

Sample success responses

XML format

HTTP/1.1 200 OK


JSON format

HTTP/1.1 200 OK

  "ScalingActivityId" : "asa-bp140qd7mak8k63f****",
  "RequestId" : "473469C7-AA6F-4DC5-B3DB-A3DC0DE3C83E"

Error codes

For a list of error codes, visit the API Error Center.

HTTP status code

Error code

Error message




A required authorization for the specified action is not supplied.

The error message returned because Auto Scaling is not authorized to call the operation.



The specified scaling group does not exist.

The error message returned because the specified scaling group does not exist within the Alibaba Cloud account.



The Load Balancer "%s" does not exist.

The error message returned because the specified SLB instance is not associated with the scaling group.