Processing method, system and equipment for signature data verification failure

The embodiment of the invention discloses a method for processing contracting-data verification failure. The method comprises the following steps: confirming that contracting-data verification failure occurs in a location-updating process; and instructing a mobility management entity of an opposite end to delete context of UE or cancel the correlation of the UE between a current network and an opposite-end network but reserve the context of the UE. The embodiment of the invention discloses a system and equipment for processing contracting-data verification failure. The invention is applied toprocessing the contracting-data verification failure of the UE in the process of updating location areas, and can ensure that the ISR state between the mobility management entities is kept consistentwith that between the mobility management entities and the UE so as to enable an ISR mechanism to be smoothly executed.