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.

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

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

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 specified scaling group from the backend server groups of the SLB instance. Valid values:

  • true: removes the ECS instances.
  • false: does not remove the ECS instances.

Default value: false.

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

The client token that is used to guarantee the idempotence of the request. You can use the client to generate the value, but you must make sure that the value 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 use asynchronous calls when you associate an SLB instance with the scaling group. Asynchronous calls ensure the transactional nature of operations, which means that all operations are successfully performed or the execution results do not take effect if some operations fail. We recommend that you use asynchronous calls.

Valid values:

  • true: asynchronous calls. The request returns the ID of the scaling activity.
  • false: synchronous calls.

Default value: false.

Response parameters

Parameter Type Example Description
RequestId String 473469C7-AA6F-4DC5-B3DB-A3DC0DE3C83E

The ID of the request.

ScalingActivityId String asa-bp140qd7mak8k63f****

The ID of the scaling activity.

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


Sample requests

&<Common request parameters>

Sample success response

XML format


JSON format

    "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 specified operation.



The specified scaling group does not exist.

The error message returned when the specified scaling group does not exist within the current account.



The Load Balancer "%s" does not exist.

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