Dear,
I tried to debug this from RAN side, and i found the solution like i was not providing the correct CIDR for UE allocation in free5GC.conf file, after providing the correct CIDR the problem got resolved.
Thanks for your help.
Dear @ywang06,
no need to change free5gc.conf file apart from our corresponding ip addresses with cidr value. i think web portal is enough with some modifications like giving some examples such as if IP addresses are of class C then cidr would be /24 etc…