I have a simple database that a user records the work they have done for the day. They are required to fill out the form with the item number, date, qty etc... the problem is some people are fat fingering things and i am not getting the right item numbers... I have a table called dbo_item with all the possible item numbers in it, is it possible that after they hit enter or click off the item number box it will tell them they put in an invalid item if it doesn't match one of the items from that table? Thanks