The betrothal can be prevented on two grounds: either the German envoys fail to bring a commission from the Duke authorizing them to conclude the legalities of the marriage; or they can't provide written evidence that her previous betrothal was formally revoked.
Vjeridba može biti raskinuta u dva slučaja: bilo da njemački emisar ne donese ovlašćenje od vojvode, koje ga ovlašćuje da zaključi pravovaljanost tog braka, ili da ne mogu da pruže pismeni dokaz da je njena prethodna vjeridba otkazana.