Section: 5.3.5.17.2.2 SL indirect path specific configuration
Content: The L2 U2N Remote UE shall: 1> if sl-IndirectPathAddChange is set to setup: 2> consider the UE indicated by the sl-IndirectPathRelayUE-Identity to be the (target) L2 U2N Relay UE and indicate to upper layer to trigger the PC5 unicast link establishment with the L2 U2N Relay UE; 2> start timer T421 for the corresponding L2 U2N Relay UE with the timer value set to T421; 2> indicate to upper layer (to trigger the PC5 unicast link release) with the source L2 U2N Relay UE in case of SL indirect path change (i.e. a new L2 U2N Relay UE is indicated via sl-IndirectPathRelayUE-Identity); 1> else if sl-IndirectPathAddChange is set to release: 2> consider the SL indirect path is released and release the corresponding configurations; 2> indicate to upper layer (to trigger the PC5 unicast link release) with the L2 U2N Relay UE.