QuickBooks can check your company file for damage before creating a backup.
Select this option to have QuickBooks thoroughly check your company file for problems. This extensive check takes a little longer than the other options, but we recommend making it part of your regular backup routine.
Note: If you're working in multi-user mode, this option isn't available. Select Quicker verification instead.
Select this option to have QuickBooks check only the most important parts of your company file. This option is faster than Complete verification but less thorough.
Select this option when you need to quickly back up a file but don't want to take the time to check your company file first. Don't use this option as part of your regular backup routine.
Important: If you select the No verification option, QuickBooks won't create a transaction log file.