https://docs.paloaltonetworks.com/panorama/9-1/panorama-admin/manage-firewalls/manage-device-groups/manage-unused-shared-objects
https://knowledgebase.paloaltonetworks.com/KCSArticleDetail?id=kA10g000000Cm1CCAS

One of the potential causes of a failed install when upgrading Panorama to PAN-OS is having outdated plugins. Plugins are software extensions that enable Panorama to interact with Palo Alto Networks cloud services and third-party services. Plugins have dependencies on specific PAN-OS versions, so they must be updated before or after upgrading Panorama, depending on the plugin compatibility matrix2. If the plugins are not updated accordingly, the upgrade process may fail or cause issues with Panorama functionality3. Reference: Panorama Plugins Upgrade/Downgrade Considerations, Troubleshoot Your Panorama Upgrade, PCNSE Study Guide (page 54)

The Advanced Routing Engine in Palo Alto Networks firewalls enhances the capabilities of routing functionalities, allowing for more complex and robust routing configurations. To enable the Advanced Routing Engine on a Palo Alto Networks firewall, an administrator needs to navigate to the Network tab, select Virtual Routers, and then access the settings for the specific virtual router they wish to configure. Within the Router Settings under the General tab, there's an option to enable Advanced Routing features. After enabling this option, the administrator must commit the changes and perform a system reboot for the changes to take effect. This process allows the firewall to utilize advanced routing protocols and features, enhancing its ability to manage and route traffic more efficiently across different network segments.

https://docs.paloaltonetworks.com/pan-os/10-2/pan-os-web-interface-help/panorama-web- interface/panorama-device-deployment/manage-software-and-content-updates
https://docs.paloaltonetworks.com/pan-os/10-2/pan-os-web-interface-help/panorama-web- interface/panorama-device-deployment/panorama-dynamic-updates-revert-content