Formula to look at "Client Name" and if duplicate only return Yes for the first one, if not duplicate then just return Yes but I'm getting an error. Help?
=IF(COUNTIF([Client Name]$1:[Client Name]@row, [Client Name]@row) = 1, "Yes", IF(MIN(COLLECT(ROW([Client Name]$1:[Client Name]@row), [Client Name]$1:[Client Name]@row, @cell = [Client Name]@row)) = ROW([Client Name]@row), "Yes", ""))