I need to check two cells to see if they already exist on the sheet so I'm using a duplicate check formula and OR, but it's not working properly. It works for the email address, but the Full Name does not work.
=IF(OR(COUNTIF([Full Name]:[Full Name], [Full Name]@row) > 1, 1),COUNTIF([Email Address]:[Email Address], [Email Address]@row) > 1, 1)