Does AWS Step-functions-local support map tasks?

I am trying to write automated tests using the AWS Step-Functions-Local service against a state machine that has a map task in it. I can create the state machine just fine with no errors in the step-functions-local container, but as soon as I try to execute one of the tests, I get an error message indicating that my state machine has syntax errors.

So, I created a state machine from scratch that had only a map task and a success step. Got the same error executing a test against it. Removed the map task and the test passed.

I know that the local version doesn't have full feature parity, but I have yet to find something that explains definitely what is / isn't there. I'm guessing the answer to my question is that map tasks are one of those missing features, but I want to make sure that I haven't done something wrong.

I think you were using ItemProcessor field, which is used to define processing steps within a Map State, which is not supported in Step Function Local. Instead you can use the Iterator field when defining Map states for local testing.

https://docs.aws.amazon.com/step-functions/latest/dg/state-map-inline.html

this is an example of the iterator:

{
  "Type": "Map",
  "ItemsPath": "$.items",
  "Iterator": {
    "StartAt": "YourTaskState",
    "States": {
      "YourTaskState": {
        "Type": "Task",
        "Resource": "arn:aws:lambda:REGION:ACCOUNT_ID:function:FUNCTION_NAME",
        "End": true
      }
    }
  },
  "End": true
}

if this didn't work out also, feel free to share some code snippet to check it