Abstract: A method for restoring faulty subscriber-related data in an Evolved Packet System (EPS) network including a Home Subscriber Server (HSS) and a 3GPP AAA server, be characterized by comprising the following steps performed at the 3GPP AAA server: receiving an indicator from the HSS, the indicator identifying one or more subscribers having the faulty subscriber-related data stored in the HSS; and for an interaction with an access from a non-3GPP network, if the access corresponding to one of the identified subscribers, instructing the HSS to restore the faulty subscriber-related data for one or all of the identified subscribers.