Settings & keep-time · Support IDs and diagnostic logs
What is the PIN next to my Application ID, and when should I rotate it?
Short answer: The PIN is the second half of the pair that lets diagnostic logs be sent from your install. Click Rotate in Settings → Notifications to revoke that ability at any time.
The PIN is the second half of the pair that allows diagnostic logs to be sent from your install. Anyone with both your Application ID and the PIN could push debug logs from it, which is why support asks for both and nobody else should have them.
Click Rotate in Settings → Notifications whenever you want to revoke that ability — for example once a support case is closed. The old PIN stops working straight away.