6.1.4a Coordination between 5GSM and SM

24.5013GPPNon-Access-Stratum (NAS) protocol for 5G System (5GS)Release 18Stage 3TS

Coordination between 5GSM and SM states is not required.

After the 5G-SRVCC handover from NG-RAN to UTRAN (see 3GPP TS 23.216 [6A]), all the PDU sessions of the UE are locally released at the UE and the network. If the UE has any PDU sessions associated with one or more MBS multicast sessions, the UE shall locally leave the associated MBS multicast sessions and the network shall consider the UE as removed from the associated MBS sessions.