Hello PANGURUS,
The X-Forwarded-For Headers option has already been enabled and it has been set to Enabled for security policy, but the information is not visible.
Something else has to be enabled in the device configuration or in the load balancer?
I followed this kb.
https://docs.paloaltonetworks.com/pan-os/10-0/pan-os-admin/policy/identify-users-connected-through-a-proxy-server/use-xff-values-for-ip-based-security-policy-and-logging.html

Thanks for your help