When you run a backup or create a portable file, QuickBooks first verifies the integrity of your company file by checking for damage. .
Complete verification
This level checks both the data in the database and the accuracy of your company file. . Intuit recommends that you use this verification level as part of your regular backup routine. .
Quicker verification
This level checks the database only. . Although it's faster, it doesn't check the accuracy of your company file.
No verification
There may be specific instances when you need to quickly back up a file without verifying it. . Don't use this verification level as part of your regular backup routine.
Important: If you select the No verification option, QuickBooks won't create a transaction log file.