moto/tests/test_stepfunctions/parser/templates/parallel_fail.json

{
  "Comment": "PARALLEL_STATE_FAIL",
  "StartAt": "ParallelState",
  "States": {
    "ParallelState": {
      "Type": "Parallel",
      "End": true,
      "Branches": [
        {
          "StartAt": "Branch1",
          "States": {
            "Branch1": {
              "Type": "Fail",
              "Error": "FailureType"
            }
          }
        }
      ]
    }
  }
}