Behavior Change

Previous Behavior: In N2 handover, if direct path is not available between S-RAN and T-RAN then SMF may decide to enable IDFT for data forwarding. So, SMF expects DL forwarding UP tunnel information from T-RAN for indirect data forwarding. If T-ran doesn't provide the DL forwarding UP tunnel information then SMF rejects the handover.

New Behavior: Now, If T-ran doesn't provide the DL forwarding UP tunnel information then SMF continues the HO without IDFT.