https://docs.paloaltonetworks.com/pan-os/9-0/pan-os-new-features/app-id-features/policy-optimizer
his new feature identifies port-based rules so you can convert them to application-based rules that allow the traffic or add applications to existing rules without compromising application availability. https://docs.paloaltonetworks.com/pan-os/9-0/pan-os-new-features/app-id-features/policy-optimizer.html