Verify Quantities lets you check Item quantitites like On Hand, Allocated, Available.
Go to Items Search, Find All and Select All with Command-A, or find and select some. Click Update, in the pulldown select Verify Quantitites, and click OK to verify them.
If any are found to update, a dialog will offer to Update or Display. Choose Display if you want to see the Items, then repeat the steps above, and click Update to change.