AWS Step Functions
API Reference (API Version 2016-11-23)


Used by workers to report that the task identified by the taskToken completed successfully.

Request Syntax

{ "output": "string", "taskToken": "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.


The JSON output of the task.

Type: String

Length Constraints: Maximum length of 32768.

Required: Yes


The token that represents this task. Task tokens are generated by the service when the tasks are assigned to a worker (see GetActivityTask:taskToken).

Type: String

Length Constraints: Minimum length of 1. Maximum length of 1024.

Required: Yes

Response Elements

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


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


The provided JSON output data is invalid.

HTTP Status Code: 400


The provided token is invalid.

HTTP Status Code: 400


HTTP Status Code: 400


HTTP Status Code: 400

See Also

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