Also in Italy: my mom has several middle names and she has one set on her national ID, another on her driver's license and the codice fiscale was calculated wit

Also in Italy: my mom has several middle names and she has one set on her national ID, another on her driver's license and the codice fiscale was calculated with only the first given name. She's having so much trouble opening a new bank account that she's probably going to legally change her name (rather than her codice fiscale). I agree with you that in general this system works pretty well, but we also have our nagging issues. In general the problem is that most automated systems ask you for all the info necessary to compute your codice fiscale and then double check what you've entered, if you're one of those cases where one letter had to be changed or something like that, most online forms will complain and give no possibility of recourse.