Section: 4.2.2.3 Deregistration procedures 4.2.2.3.1 General
Content: The Deregistration procedure allows: - the UE to inform the network that it does not want to access the 5GS any longer; and - the network to inform the UE that it does not have access to the 5GS any longer; or - the network to inform the UE that the UE's Registered PLMN is not allowed to operate at the UE location. The Deregistration request by the UE and Deregistration request by the network include whether the Deregistration applies to the 3GPP access, to the non-3GPP access, or to both. When the UE is registered to both accesses in the same PLMN, the Deregistration message can be sent over any access regardless of the access the Deregistration is applied to. Network-initiated Deregistration may be initiated if the UE's registered PLMN is not allowed to operate in the present UE location.