Golf MK7 Gti DSG Japanese Import Help Needed !!

Hi sorry to bring old thread back to life can I ask did the trip to dealer sort out your seatbelt warning on airbag module , I've same problem fitted two used seat belts and can't remove airbag fault , no other warnings but can't find anyone with a cone back saying how the coded used seatbelt to module , I'm sure it's possible , please rely ta John ( uk) to