Every sysadmin at my previous job (a Fortune 500) would stop the moment that number is off the expected by a few machines, just long enough to verify it's correct. That may be due to having made a mistake like this once. I know that's true in several other large shops, as well.

Source: I'm was the one the one they would call for our team... usually at 4:00 AM because one of our team members (which was also frequently me) didn't document something correctly.