You can't make a keypad do that. It's not permitted to show any detail to a level 1 user ie non permitted user. That's why it beeps etc till a level 2 user proves presence, code or fob. Regulation issue
assuming as you say 0abcd then its not on default codes. But I only know the uk panels and they may have different defaults. I think they are printed on the pcb in the aerial area.
if the code was correct it wouldn't wait for any more digits