Hey!
We also have this issue, so I raised a support ticket with Palo Alto and this is their response.
This behavior is a known issue with Panorama 9.x Engineering is aware of the issue. From reading the notes, it looks like there is no setting or anything to implement as a workaround. It appears to be strictly about the size of the call as you discovered. In testing, only making the API call shorter allowed it to work. Currently, there is no ETA on a resolution.
I'll let you know if we get any more information about this from Palo Alto.
Expedition on 1.1.81.
... View more