1. A method for handling a faulty registration received for a mobile communications device of a subscriber in a provisioning system, wherein the faulty registration comprises a field with missing identification information, the provisioning system including a list of registrations for mobile communications devices of subscribers, said method comprising the steps of: selecting another field populated with other identification information in said faulty registration; searching said list of registrations based on said identification information; associating said faulty registration with a registration retrieved from said list of registrations having matching identification information; utilizing said retrieved registration for identifying the subscriber associated with the mobile communications device for said faulty registration.