title: MissingRequiredParameter: Missing required key 'FunctionName' in params
body: <p>I'm working on a supervised machine learning problem, and I am setting up a custom labeling task to send out to Amazon Mechanical Turk for human annotation.</p>
  
  <p>I have uploaded the data to AWS S3 in the json-lines (<code>.jsonl</code>) format as follows, pursuant to the instructions as specified in the AWS documentation <a href="https://docs.aws.amazon.com/sagemaker/latest/dg/sms-data-input.html" rel="nofollow noreferrer">https://docs.aws.amazon.com/sagemaker/latest/dg/sms-data-input.html</a>: </p>
  
  <pre><code>{"source": "value0"}
  {"source": "value1"}    
  {"source": "value2"}
  ...
  {"source": "value2"}
  </code></pre>
  
  <p>When I click on the default text classification template, I can see my data come through and everything appears to work.</p>
  
  <p>However, I am getting the following error when I attempt to use the custom annotation task template interface: <code>MissingRequiredParameter: Missing required key 'FunctionName' in params</code> </p>
  
  <p>The error resembles an AWS Lambda error, except the strange thing is that I am not using AWS Lambda. Suggestions for how to proceed? </p>