I don't think you can set custom error names from a Lambda function: "Important Custom Error Names, like those shown above ("ErrorA", "ErrorB", etc.) can be ge

I don't think you can set custom error names from a Lambda function: "Important Custom Error Names, like those shown above ("ErrorA", "ErrorB", etc.) can be generated by an Activity, but not Lambda Functions. (See "FunctionError" field in the Lambda Response Syntax for more information"[0] [0] https://docs.aws.amazon.com/step-functions/latest/dg/concepts-error-handling.html https://docs.aws.amazon.com/step-functions/latest/dg/concept...