This section lists and describes PFCP message types.
There are three categories of PFCP messages
Node related messages (0 to 49) that establish communication between Sxa, Sxb, Sxc, and N4 PFCP nodes.
Session related messages (50-99) that create, update, and delete associations among PFCP nodes and start, modify, and stop sessions between nodes.
Other messages (100 to 255) for future use.