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Elastic Compute Service:DeleteLaunchTemplateVersion

Last Updated:Jun 18, 2026

Deletes one or more versions of a specified launch template by specifying parameters such as LaunchTemplateId and DeleteVersion.

Operation description

When you call this operation, take note of the following items:

  • The default version cannot be deleted. You must delete the entire launch template to remove the default version.

  • If the version you want to delete is the default version, you can call ModifyLaunchTemplateDefaultVersion or switch the default version in the Launch Template console, and then perform the delete operation.

  • Deleting a version does not affect instances that were already created from that version.

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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

ecs:DeleteLaunchTemplateVersion

delete

*LaunchTemplate

acs:ecs:{#regionId}:{#accountId}:launchtemplate/{#launchtemplateId}

None None

Request parameters

Parameter

Type

Required

Description

Example

RegionId

string

Yes

The region ID of the launch template. You can call DescribeRegions to query the most recent region list of Alibaba Cloud.

cn-hangzhou

DeleteVersion

array

Yes

The version numbers of the launch template to delete.

2

integer

No

The version number of the launch template. Valid values of N: 1 to 29. You can call DescribeLaunchTemplateVersions to query launch template version numbers.

2

LaunchTemplateId

string

No

The ID of the launch template to delete. For more information, see DescribeLaunchTemplates.

lt-bp1apo0bbbkuy0rj****

LaunchTemplateName

string

No

The name of the launch template.

testLaunchTemplateName

Response elements

Element

Type

Description

Example

object

RequestId

string

The request ID.

473469C7-AA6F-4DC5-B3DB-A3DC0DE3C83E

LaunchTemplateVersions

object

LaunchTemplateVersion

array<object>

The deleted launch template versions.

object

LaunchTemplateId

string

The ID of the launch template.

lt-bp1apo0bbbkuy0rj****

LaunchTemplateVersionNumber

integer

The version number of the launch template.

2

Examples

Success response

JSON format

{
  "RequestId": "473469C7-AA6F-4DC5-B3DB-A3DC0DE3C83E",
  "LaunchTemplateVersions": {
    "LaunchTemplateVersion": [
      {
        "LaunchTemplateId": "lt-bp1apo0bbbkuy0rj****",
        "LaunchTemplateVersionNumber": 2
      }
    ]
  }
}

Error codes

HTTP status code

Error code

Error message

Description

400 InvalidRegion.NotExist %s The specified region does not exist.
400 MissingParameter %s A parameter is not specified.
400 InvalidParameter %s The specified parameter is invalid.
403 InvalidOperation.DeleteDefaultVersion %s The operation is invalid. The default version cannot be deleted.
403 InnerServiceFailed %s An internal service cannot be called.

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.