I would not use that: a common programming idiom is that of "returning an error code", and "ritornare un errore" may be confused with this. As in "return error;

I would not use that: a common programming idiom is that of "returning an error code", and "ritornare un errore" may be confused with this. As in "return error;" where "error" is some error code, against "throw error;" where "error" is whatever exception class.