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Simple Application Server:ListInstancePlansModification

Last Updated:Jul 28, 2025

This topic describes the list of plans to which a specified simple application server can be upgraded.

Operation description

As your business grows, the resources of a purchased server may no longer meet your requirements. Retrieve the list of plans to which the current server can be upgraded, then call the UpgradeInstance to upgrade.

Note

We recommend that you create a snapshot of the disk of the server to back up data before you upgrade the instance. For more information, see CreateSnapshot.

For more information about the limits on instance configuration upgrades, see Upgrade instance configurations.

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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 support 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

swas-open:ListInstancePlansModification

get

*All Resource

*

None

None

Request parameters

Parameter

Type

Required

Description

Example

RegionId

string

Yes

The region ID. You can call the ListRegions operation to query the most recent region list.

cn-hangzhou

InstanceId

string

Yes

The ID of the Simple Application Server instance.

ace0706b2ac4454d984295a94213****

Response parameters

Parameter

Type

Description

Example

object

Plans

array<object>

The array of plans.

object

Core

integer

The number of vCPU cores.

2

Bandwidth

integer

The peak bandwidth. Unit: Mbps.

200

DiskSize

integer

The disk capacity. Unit: GiB.

40

Flow

integer

The monthly traffic. Unit: GB.

400

Memory

integer

The memory size. Unit: GiB.

1

PlanId

string

The plan ID.

swas.s2.c2m1s40b3t04

DiskType

string

The disk type. Valid values:

  • SSD: a standard SSD.

  • ESSD: an Enhanced SSD (ESSD) at performance level (PL) 0.

  • CLOUD_EFFICIENCY: an ultra disk.

ESSD

OriginPrice

number

The price of the plan.

60

Currency

string

The unit of the price. Valid values:

  • CNY: Chinese Yuan

  • USD: US Dollar

CNY

SupportPlatform

string

The operating systems supported by the plan.

["Linux","Windows"]

RequestId

string

The request ID.

20758A-585D-4A41-A9B2-28DA8F4F****

Examples

Success response

JSON format

{
  "Plans": [
    {
      "Core": 2,
      "Bandwidth": 200,
      "DiskSize": 40,
      "Flow": 400,
      "Memory": 1,
      "PlanId": "swas.s2.c2m1s40b3t04",
      "DiskType": "ESSD",
      "OriginPrice": 60,
      "Currency": "CNY",
      "SupportPlatform": "[\"Linux\",\"Windows\"]"
    }
  ],
  "RequestId": "20758A-585D-4A41-A9B2-28DA8F4F****"
}

Error codes

HTTP status code

Error code

Error message

Description

400

RegionIdNotMatchHost

The parameter regionId does not match the endpoint host.

500

InternalError

An error occurred while processing your request.

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.