Symptom
Default netflow exporter transport UDP port is missing from command helper
NEX-1-VDC-A# conf t
Enter configuration commands, one per line. End with CNTL/Z.
NEX-1-VDC-A(config)# flow exporter Branch_export
NEX-1-VDC-A(config-flow-exporter)# transport udp ?
Destination UDP Port
Workaround
Issue command "show running-config netflow all" to find out default netflow exporter transport UDP port is 9995.