There was a time when I deleted a Google Apps account without doing the transfer of ownership of Drive documents during employee departure processing…

Fortunately, it seems you can restore users for 5 days after deleting them, and if you restore the user, you can also restore their documents.

• Restore recently deleted users - Google Apps Help
• Restore deleted users' documents - Google Apps Help

I was barely safe on the 5th day after deletion, so I was able to restore using the above articles as reference.

I thought that having a grace period for recovery when something goes wrong is something I can apply when I develop systems myself.

Anyway, I was saved. Thank you Google Apps!

That’s all from the Gemba.