Common Error Responses Below are the most common error responses returned by the API, along with their descriptions to facilitate troubleshooting: Invalid Username/Password { "result": "error", "message": "Invalid Username/Password" } Description: The provided username or password is incorrect. Ensure that goUser and goPass are valid credentials.   Invalid Response Type result=error;message=This API function only accepts XML or JSON value on responsetype Description: The responsetype parameter must be either json or xml . Double-check the parameter value in your request.   Missing Required Parameters { "code": "40001", "message": "Error: Missing required parameters" } Description:  One or more required parameters are missing from the request. Verify that all required fields are correctly populated.