All Products
Search

This Product

    Serverless App Engine:RescaleApplicationVertically

    Document Center

    Serverless App Engine:RescaleApplicationVertically

    Last Updated:Mar 17, 2026

    Changes the instance type of an application.

    Try it now

    Try this API in OpenAPI Explorer, no manual signing needed. Successful calls auto-generate SDK code matching your parameters. Download it with built-in credential security for local usage.

    Test

    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

    sae:RescaleApplicationVertically

    none

    *All Resource

    *

    		 None None

    Request syntax

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

    Request parameters

    Parameter

    Type

    Required

    Description

    Example
    AppId

    string

    Yes

    The ID of the application.

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

    string

    Yes

    The CPU specifications, in millicores.

    1000
    Memory

    string

    Yes

    The memory size, in MB.

    2048
    minReadyInstances

    integer

    No

    The minimum number of ready instances.

    1
    minReadyInstanceRatio

    integer

    No

    The minimum percentage of ready instances.

    50
    autoEnableApplicationScalingRule

    boolean

    No

    Specifies whether to automatically enable the auto scaling rule.

    true
    DiskSize

    string

    No

    The disk size for each node, in GB.

    20
    ResourceType

    string

    No

    VSwitchId

    string

    No

    Deploy

    boolean

    No

    Response elements

    Element

    Type

    Description

    Example

    object

    RequestId

    string

    The request ID.

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

    string

    The returned message.

    success
    TraceId

    string

    The trace ID of the request. You can use this ID to query the details of the request.

    0bc3b6f315637273629117900d****
    Data

    object

    The returned data.

    ChangeOrderId

    string

    The ID of the change order.

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

    string

    The error code.

    • If the request is successful, this parameter is not returned.

    • If the request fails, this parameter is returned. For more information, see the Error codes section of this topic.

    空
    Code

    string

    The HTTP status code.

    • 2xx: The request was successful.

    • 3xx: The request was redirected.

    • 4xx: A request error occurred.

    • 5xx: A server error occurred.

    200
    Success

    boolean

    Indicates whether the instance type was successfully changed.

    • true: The change was successful.

    • false: The change failed.

    true

    Examples

    Success response

    JSON format

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

    Error codes

    HTTP status code

    Error code

    Error message

    Description
    400 InvalidApplication.NotFound The current application does not exist.
    400 InvalidInstanceSpecification.Unsupported The instance specification is not supported: CPU [%s], memory [%s].
    400 InvalidParameter.NotEmpty You must specify the parameter %s.
    400 InvalidParameter.Obviously The specified parameter is invalid {%s}.
    400 InvalidParameter.WithMessage The parameter is invalid {%s}: %s
    400 NoComputeResourceQuota.Exceed Your compute resource is insufficient. Please contact us to raise the quota.
    400 user.indebt The user has an outstanding payment.
    400 System.Upgrading The system is being upgraded. Please try again later.
    400 Application.ChangerOrderRunning An application change process is in progress. Please try again later. An application change process is in progress. Please try again later.
    400 Application.InvalidStatus The application status is abnormal. Please try again later. The application status is abnormal. Please try again later.
    400 Application.NotDeployYet The application has not been deployed. Please deploy it and try again. The application has not been deployed. Please deploy it and try again.

    See Error Codes for a complete list.

    Release notes

    See Release Notes for a complete list.