SC4S - Palo Alto PANOS Log Type Port Question

[Optumize13]

SC4S Newbie here.

Why are IETF framed logs specifically bound to port 601? The documentation contradicts itself, unless I'm reading it wrong.

Per documentation:
IMPORTANT IETF Framed syslog must use port 601
https://splunk.github.io/splunk-connect-for-syslog/main/sources/vendor/PaloaltoNetworks/panos/

ALSO in the documentation:
SC4S_LISTEN_PULSE_PAN_PANOS_RFC6587_PORT | empty string | Enable a TCP using IETF Framing (RFC6587) port for this specific vendor product using a comma-separated list of port numbers

When I tried to enable this option (TCP-1601), it didn't work until I switched the port back to 601.

It is a security no-no for our environment to use root level ports (<1024). Security prefers us to use ports above 1024.