AWS Systems Manager
API Reference (API Version 2014-11-06)


Lists the tasks in a Maintenance Window.

Request Syntax

{ "Filters": [ { "Key": "string", "Values": [ "string" ] } ], "MaxResults": number, "NextToken": "string", "WindowId": "string" }

Request Parameters

For information about the parameters that are common to all actions, see Common Parameters.

The request accepts the following data in JSON format.


Optional filters used to narrow down the scope of the returned tasks. The supported filter keys are WindowTaskId, TaskArn, Priority, and TaskType.

Type: Array of MaintenanceWindowFilter objects

Array Members: Minimum number of 0 items. Maximum number of 5 items.

Required: No


The maximum number of items to return for this call. The call also returns a token that you can specify in a subsequent call to get the next set of results.

Type: Integer

Valid Range: Minimum value of 10. Maximum value of 100.

Required: No


The token for the next set of items to return. (You received this token from a previous call.)

Type: String

Required: No


The ID of the Maintenance Window whose tasks should be retrieved.

Type: String

Length Constraints: Fixed length of 20.

Pattern: ^mw-[0-9a-f]{17}$

Required: Yes

Response Syntax

{ "NextToken": "string", "Tasks": [ { "Description": "string", "LoggingInfo": { "S3BucketName": "string", "S3KeyPrefix": "string", "S3Region": "string" }, "MaxConcurrency": "string", "MaxErrors": "string", "Name": "string", "Priority": number, "ServiceRoleArn": "string", "Targets": [ { "Key": "string", "Values": [ "string" ] } ], "TaskArn": "string", "TaskParameters": { "string" : { "Values": [ "string" ] } }, "Type": "string", "WindowId": "string", "WindowTaskId": "string" } ] }

Response Elements

If the action is successful, the service sends back an HTTP 200 response.

The following data is returned in JSON format by the service.


The token to use when requesting the next set of items. If there are no additional items to return, the string is empty.

Type: String


Information about the tasks in the Maintenance Window.

Type: Array of MaintenanceWindowTask objects


For information about the errors that are common to all actions, see Common Errors.


Error returned when the ID specified for a resource, such as a Maintenance Window or Patch baseline, doesn't exist.

For information about resource limits in Systems Manager, see AWS Systems Manager Limits.

HTTP Status Code: 400


An error occurred on the server side.

HTTP Status Code: 400

See Also

For more information about using this API in one of the language-specific AWS SDKs, see the following: