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Amazon Mechanical Turk
API Reference (API Version 2017-01-17)

ApproveAssignment

Description

The ApproveAssignment operation approves the results of a completed assignment created with the API.

Approving an assignment initiates two payments from the Requester's Amazon.com account: the Worker who submitted the results is paid the reward specified in the HIT, and Amazon Mechanical Turk fees are debited. If the Requester's account does not have adequate funds for these payments, the call to ApproveAssignment returns an exception, and the approval is not processed. You can include an optional feedback message with the approval, which the Worker can see in the Status section of the web site.

You can also call this operation on assignments that were previous rejected and approve them by over-riding the previous rejection. This works only on rejected assignments that were submitted within the previous 30 days and only if the assignment's related HIT has not been deleted.

Note

To maintain the consistency of the assignments for HITs in a batch, if a HIT is created through the Amazon Mechanical Turk Requester website, you must use the Requester website UI to approve or reject the work.

If you want to be able to approve or reject work through the API, you can use a HITLayout when calling CreateHIT to utilize an existing template from the Amazon Mechanical Turk Requester website

Request Syntax

{ "AssignmentId": String, "RequesterFeedback": String, "OverrideRejection": Boolean }

Request Parameters

The request accepts the following data in JSON format:

Name Description Required

AssignmentId

The ID of the assignment. This parameter must correspond to a HIT created by the Requester.

Type: String

Yes

RequesterFeedback

A message for the Worker, which the Worker can see in the Status section of the web site.

Type: String

Constraints: Can be up to 1024 characters (including multi-byte characters). The RequesterFeedback parameter cannot contain ASCII characters 0-8, 11,12, or 14-31. If these characters are present, the operation throws an InvalidParameterValue error.

No

OverrideRejection

A flag indicating whether you want to approve an assignment that was previously rejected.

Type: Boolean

Constraints: This works only on rejected assignments that were submitted within the previous 30 days and only if the assignment's related HIT has not been deleted.

No

Response Elements

A successful request for the ApproveAssignment operation returns with no errors and an empty body.

Example

The following example shows how to use the ApproveAssignment operation:

Sample Request

The following example approves an assignment identified by its assignment ID.

POST / HTTP/1.1 Host: mturk-requester.us-east-1.amazonaws.com Content-Length: <PayloadSizeBytes> X-Amz-Date: <Date> { AssignmentId:"123RVWYBAZW00EXAMPLE456RVWYBAZW00EXAMPLE" }

Sample Response

The following is an example response:

HTTP/1.1 200 OK x-amzn-RequestId: <RequestId> Content-Type: application/x-amz-json-1.1 Content-Length: <PayloadSizeBytes> Date: <Date>