Section: 6.2.15 Handling of Reliable Data Service
Content: If the UE supports Reliable Data Service (see 3GPP TS 23.501[ System architecture for the 5G System (5GS) ]  [8] and 3GPP TS 24.250[ Protocol for Reliable Data Service; Stage 3 ]  [14A]), the UE may request data transfer using Reliable Data Service for a PDU session in the Extended protocol configuration options IE during UE-requested PDU session establishment procedure (see subclause 6.4.1). The Reliable Data Service may only be used with PDU sessions for which the "Control Plane CIoT 5GS Optimisation" indicator is set or with PDU sessions using the control plane CIoT 5GS optimization when the AMF does not move such PDU sessions to the user plane. The network shall inform the UE about the acceptance of UE's request for Reliable Data Service usage during the PDU session establishment procedure (see subclause 6.4.1) in the Extended protocol configuration options IE. If the network accepts the use of Reliable Data Service to transfer data for the specified PDU session, the UE shall use this PDU session exclusively for data transfer using Reliable Data Service; otherwise the UE shall not use this PDU session for data transfer using Reliable Data Service.