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Serverless App Engine:RescaleApplicationVertically

Last Updated:Dec 17, 2025

Changes the instance specifications 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
sae:RescaleApplicationVerticallynone
*All Resources
*
    none
none

Request syntax

POST /pop/v1/sam/app/rescaleApplicationVertically HTTP/1.1

Request parameters

ParameterTypeRequiredDescriptionExample
AppIdstringYes

The app ID.

0099b7be-5f5b-4512-a7fc-56049ef1****
CpustringYes

Target CPU specification. Unit: millicore.

1000
MemorystringYes

Target memory specification. Unit: MB.

2048
minReadyInstancesintegerNo

Minimum ready instances.

1
minReadyInstanceRatiointegerNo

The ratio of minimum ready instances.

50
autoEnableApplicationScalingRulebooleanNo

Enable application scale rules automatically.

true
DiskSizestringNo

The disk size. Unit: GB.

20

Response parameters

ParameterTypeDescriptionExample
object
RequestIdstring

Request ID.

AB521DBB-FA78-42E6-803F-A862EA4F****
Messagestring

Messages returned for additional information.

success
TraceIdstring

Trace ID for request information.

0bc3b6f315637273629117900d****
Dataobject

Data returned.

ChangeOrderIdstring

The ticked ID of updates.

ffd8cd45-2b5f-415d-b4d0-1003e80b****
ErrorCodestring

The error code. Valid values:

  • If the call is successful, the ErrorCode parameter is not returned.
  • If the call fails, the ErrorCode parameter is returned. For more information, see the Error codes section in this topic.
Null
Codestring

The HTTP status code. Valid values:

  • 2xx: The request was successful.
  • 3xx: The request was redirected.
  • 4xx: The request failed.
  • 5xx: A server error occurred.
200
Successboolean

Indicates whether the update of instance specifications was successful. Valid values:

  • true: Updated.
  • false: Failed to update.
true

Examples

Sample success responses

JSONformat

{
  "RequestId": "AB521DBB-FA78-42E6-803F-A862EA4F****",
  "Message": "success",
  "TraceId": "0bc3b6f315637273629117900d****",
  "Data": {
    "ChangeOrderId": "ffd8cd45-2b5f-415d-b4d0-1003e80b****"
  },
  "ErrorCode": "Null",
  "Code": 200,
  "Success": true
}

Error codes

HTTP status codeError codeError messageDescription
400InvalidApplication.NotFoundThe current application does not exist.-
400InvalidInstanceSpecification.UnsupportedThe instance specification is not supported: CPU [%s], memory [%s].-
400InvalidParameter.NotEmptyYou must specify the parameter %s.-
400InvalidParameter.ObviouslyThe specified parameter is invalid {%s}.-
400InvalidParameter.WithMessageThe parameter is invalid {%s}: %s-
400NoComputeResourceQuota.ExceedYour compute resource is insufficient. Please contact us to raise the quota.-
400user.indebtThe user has an outstanding payment.-
400System.UpgradingThe system is being upgraded. Please try again later.-
400Application.ChangerOrderRunningAn application change process is in progress. Please try again later.An application change process is in progress. Please try again later.
400Application.InvalidStatusThe application status is abnormal. Please try again later.The application status is abnormal. Please try again later.
400Application.NotDeployYetThe application has not been deployed. Please deploy it and try again.The application has not been deployed. Please deploy it and try again.

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

Change history

Change timeSummary of changesOperation
2025-11-26The Error code has changed. The request parameters of the API has changedView Change Details
2025-10-15The Error code has changed. The request parameters of the API has changedView Change Details
2025-04-07The Error code has changed. The request parameters of the API has changedView Change Details
2024-09-24The Error code has changed. The request parameters of the API has changedView Change Details