Section: 5.2.2.2.3 Namf_Communication_RegistrationStatusUpdate service operation
Content: Service operation name: Namf_Communication_RegistrationStatusUpdate Description: This service operation is used by the consumer NF to inform the AMF that a prior UE context transfer has resulted in the UE successfully registering with it. The UE context is marked inactive in the AMF. Input, Required: 5G-GUTI, Status. Input, Optional: PDU Session ID(s) (indicates the PDU Session(s) to be released), PCF reselected indicator (indicates that new AMF has selected a new PCF to handle the AM Policy association and/or the UE Policy association). Output, Required: None. Output, Optional: None. See clause 4.2.2.2.2 step 10 for example usage of this service operation. When the AMF receives this request, it marks the UE context information as inactive since the UE context has been successfully transferred to the peer NF and the UE has successfully registered there. The AMF receives information about whether the AM Policy Association Information and/or the UE Policy Association Information in the UE context will be used or not (i.e. new AMF may select a different PCF and then create a new AM Policy Association and/or a new UE Policy Association). The AMF sends a Namf_Communication_RegistrationStatusUpdate response to the consumer NF. NOTE 2: Whether notification Ack need a separate message or be realized in the transport layer will be determined in TS 29.518[ 5G System; Access and Mobility Management Services; Stage 3 ]  [18].