The earliest recollection of this bug is traced back to PAN-OS 8.1.20 - January 09, 2024.
This bug is fixed in PAN-OS versions 8.1.20.
Fixed an issue where, after a firewall reboot, a commit or auto-commit operation failed with the following error message: ID population failed . This issue occurred because the Phase1 ID assignment failure did not trigger an idmgr reset.
For more information:
https://docs.paloaltonetworks.com/pan-os/8-1/pan-os-release-notes/pan-os-8-1-addressed-issues/pan-os-8-1-20-addressed-issues