Clarify what the system is wanting: The example populated indicates it wants the year in a 4 digit format. However, the system will accept a 4-digit year if you do not enter backslashes, or it will accept a 2-digit year if you enter backslashes. You cannot enter a 2-digit year if you do not enter backslashes. Minor stuff, but annoying when you try to match what it's showing and then you're told it's wrong.