I am using a formula in a column, "Repeat Values" that checks another column, "Document Number", for repeat values and if there are repeat values it checks the checkbox in the "Repeat Values" column. This formula is somewhat working, but also checks the box for all blank cells in the "Document Number" column.
=IF(COUNTIFS([Document Number]:[Document Number], [Document Number]@row) > 1, 1)
I also have a conditional format that checks for checked boxes and if the box is checked, it highlights the repeats in the "Document Number" column. It is also highlighting the blank cells.
I'm not sure if it is doing this because there is also a formula in the "Document Number" column or what.
Any advise on how to modify the formula so it doesn't check the box if the "Document Number" column is a blank field?