Daniele, Please help me understand this further. My understanding is that you want the error messages for each field such as "This field is required" to be personalized. Correct? We can certainly offer that ability by providing a User Interface to provide custom error messages. However, the scope would also call for localizing those error messages via Options > Languages. I'm going to leave this suggestion open for the community to vote on. We'll accept it when there is enough votes by the community. Thanks