Hello, is it possible to override this function which check if the fields are empty?

hey @goodone120 it;s not possible to override this specific part yet. Whats the use case?

I want to change the localization of the messages. Yes I know I should do that on the frontend, but I want it also to be translated on the api

thats not possible for these specific error messages at the moment from an API level. However, it's possible on the frontend and via our pre built UI.