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Simple Application Server:CreateInstances

Last Updated:Jan 15, 2026

Creates subscription simple application servers.

Operation description

  • Before you call this operation, we recommend that you understand the billing rules of Simple Application Server. For more information, see Billable items.

Note

If you have coupons in your Alibaba Cloud account, the coupons are preferentially used to pay for the simple application servers.

  • You can create a maximum of 50 simple application servers in a region for an Alibaba Cloud account.

  • When you call this operation to create simple application servers, make sure that the balance in your account is sufficient to pay for the servers. If the balance in your account is insufficient, the servers cannot be created.

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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 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

swas-open:CreateInstances

create

*Instance

acs:swas-open:{#regionId}:{#accountId}:instance/*

None None

Request parameters

Parameter

Type

Required

Description

Example

RegionId

string

Yes

The region ID of the simple application servers. You can call the ListRegions operation to query the most recent region list.

cn-hangzhou

ImageId

string

Yes

The image ID. You can call the ListImages operation to query the available images in the specified region.

e2c9c365024a44369c9b955a998a****

PlanId

string

Yes

The plan ID. You can call the ListPlans operation to query all plans provided by Simple Application Server in the specified region.

swas.s1.c1m1s40b3t05

Period

integer

Yes

The subscription period of the servers. Unit: months. Valid values: 1, 3, 6, 12, 24, and 36.

1

AutoRenew

boolean

No

Specifies whether to enable auto-renewal. Valid values:

  • true

  • false

Default value: false.

false

AutoRenewPeriod

integer

No

The auto-renewal period. This parameter is required only when you set AutoRenew to true. Unit: month. Valid values: 1, 3, 6, 12, 24, and 36.

3

DataDiskSize

integer

No

The size of the data disk that is attached to the server. Unit: GB. Valid values: 0 to 16380. The value must be an integral multiple of 20.

  • A value of 0 indicates that no data disk is attached.

  • If the disk included in the specified plan is a standard SSD, the data disk must be 20 GB or larger in size.

Default value: 0.

20

Amount

integer

No

The number of simple application servers that you want to create. Valid values: 1 to 20.

Default value: 1.

1

ChargeType

string

No

The billing method of the simple application servers. Set the value to PrePaid, which indicates the subscription billing method.

Default value: PrePaid.

PrePaid

ClientToken

string

No

The client token that is used to ensure the idempotence of the request. You can use the client to generate the token, but you must make sure that the token is unique among different requests. The value of ClientToken can contain only ASCII characters and cannot exceed 64 characters in length. For more information, see How to ensure idempotence.

123e4567-e89b-12d3-a456-426655440000

Response elements

Element

Type

Description

Example

object

RequestId

string

The request ID.

30637AD6-D977-4833-A54C-CC89483E1FEE

InstanceIds

array

The IDs of the simple application servers.

string

The ID of the simple application server.

3a658ca270df4df39f22e289b338****

Examples

Success response

JSON format

{
  "RequestId": "30637AD6-D977-4833-A54C-CC89483E1FEE",
  "InstanceIds": [
    "3a658ca270df4df39f22e289b338****"
  ]
}

Error codes

HTTP status code

Error code

Error message

Description

400 ExceedAccountQuota The accumulated instance amounts including this order have exceeded the quota of the account.
400 NotEnoughStock The stock is insufficient.
400 PlatformNotMatch The platform of specified ImageId and PlanId does not match.
400 InvalidPeriod.ValueNotSupported The specified parameter Period is invalid.
400 InvalidDataDiskSize.ValueNotSupported The specified parameter DataDiskSize is invalid.
400 InvalidAmount.ValueNotSupported The specified parameter Amount is invalid.
400 InvalidChargeType.ValueNotSupported The specified parameter ChargeType is invalid.
400 InvalidAutoRenewPeriod.ValueNotSupported The specified parameter AutoRenewPeriod is invalid.
400 InvalidPlanIdSize.ValueNotSupported The system disk size in the specified planId does not support the image.
400 InvalidPlanMemorySize.ValueNotSupported The memory size in the specified planId does not support the image.
500 InternalError An error occurred while processing your request.
500 NotEnoughUpgradeStock The upgrade stock is insufficient.
403 PaymentFailed Payment failed. Please check your account balance.
403 InvalidInstance.UnPaidOrder The specified Instance has an unpaid order.
403 InvalidParam The specified parameter value is invalid.
404 InvalidImageId.NotFound The specified ImageId does not exist.
404 InvalidPlanId.NotFound The specified PlanId does not exist.

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.