When you mark the box, "In the future, do not show this message," the message advising you of the last time you verified your company file won't appear.
If you decide later that you want to show the message, select Preferences from the Setup menu and then choose the Security view. Simply mark the selection, "Prompt for Data Verification When Closing."
As often mentioned, data verification can catch minor inconsistencies in your company file before they cause serious problems.