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Enterprise Distributed Application Service:ScaleInApplication

Last Updated:Sep 08, 2025

Scales in the instances of an application.

Debugging

You can run this interface directly in OpenAPI Explorer, saving you the trouble of calculating signatures. After running successfully, OpenAPI Explorer can automatically generate SDK code samples.

Authorization information

The following table shows the authorization information corresponding to the API. The authorization information can be used in the Action policy element to grant a RAM user or RAM role the permissions to call this API operation. Description:

  • Operation: the value that you can use in the Action element to specify the operation on a resource.
  • Access level: the access level of each operation. The levels are read, write, and list.
  • Resource type: the type of the resource on which you can authorize the RAM user or the RAM role to perform the operation. Take note of the following items:
    • For mandatory resource types, indicate with a prefix of * .
    • If the permissions cannot be granted at the resource level, All Resources is used in the Resource type column of the operation.
  • Condition Key: the condition key that is defined by the cloud service.
  • Associated operation: other operations that the RAM user or the RAM role must have permissions to perform to complete the operation. To complete the operation, the RAM user or the RAM role must have the permissions to perform the associated operations.
OperationAccess levelResource typeCondition keyAssociated operation
edas:ManageApplicationnone
*Application
acs:edas:{#regionId}:{#accountId}:namespace/{#NameSpaceId}/application/{#AppId}
    none
none

Request syntax

POST /pop/v5/changeorder/co_scale_in HTTP/1.1

Request parameters

ParameterTypeRequiredDescriptionExample
AppIdstringYes

The ID of the application. You can call the ListApplication operation to query the application ID. For more information, see ListApplication .

3616cdca-4f92-44***********************
EccInfostringYes

The ID of the elastic compute container (ECC) that corresponds to the Elastic Compute Service (ECS) instance to be removed for the application. Separate multiple ECC IDs with commas (,). You can call the QueryApplicationStatus operation to query the ECC ID. For more information, see QueryApplicationStatus .

7040f221-42df-48e8-9*******************
ForceStatusbooleanNo

Specifies whether to forcibly unpublish the application from the ECS instance. You need to set this parameter to true only if the ECS instance expires. In normal cases, you do not need to set this parameter to true.

false

Response parameters

ParameterTypeDescriptionExample
object
ChangeOrderIdstring

The ID of the change process for this operation. You can call the GetChangeOrderInfo operation to query the progress of this scale-in. For more information, see GetChangeOrderInfo . No ID is generated if the ForceStatus parameter is set to true. You can check whether the request is successful based on the value of the Code parameter.

ddf5a4c7-a507-4a6e****************
Codeinteger

The HTTP status code that is returned.

200
Messagestring

The message that is returned.

success

Examples

Sample success responses

JSONformat

{
  "ChangeOrderId": "ddf5a4c7-a507-4a6e****************",
  "Code": 200,
  "Message": "success"
}

Error codes

For a list of error codes, visit the Service error codes.