Good Morning all, I have a table that maintains Date, Route, Customer Number and Stop. I have these as key fields so as to not duplicate from a Append Query that I use to update the table. For the past couple of days/Weeks I have noticed that he table Drops it keys and allows duplicates. How can I prevent this or is this a bug with Access? -- -The Novice Learn Today, Teach Tomorrow Great Success is ones ability to ask for Help.