What are the details on which Palo Alto App-ID is used by Identity Manager for LDAP queries for Provisioning Endpoints?
Palo Alto does not have App-IDs for Identity Manager.
According to Palo Alto documentation, you can create App-IDs, or contact Palo Alto to create and add App-IDs to their library.
https://www.paloaltonetworks.com/resources/techbriefs/app-id-tech-brief.html