Identifying Duplicates - Matching criteria across 3 Columns

Ed Gadd

I've used formula given in similar discussions on this topic. However, The formula does not seem to work 100% for what I'm trying to achieve.

=IF(AND(COUNTIFS(BUILDING]:[BUILDING], BUILDING@row) > 1, COUNTIFS([FLOOR]:[FLOOR], FLOOR@row) > 1, COUNTIFS([ROOM]:[ROOM, ROOM@row) > 1), 1, 0)

The blue cells are the duplicates. The formula (above) identifies all the cells except 2. This is incorrect. Can anyone provide some advice on where I'm going wrong please?

Thank you.

Paul Newcome

It would be the building, floor, and room range/criteria sets all built into a single COUNTIFS.

COUNTIFS(range1, criteria 1, range 2, criteria 2, range 3, criteria 3)

Ed Gadd

Hi @Paul Newcome Thanks very much I can see how that would work now. Much appreciated.

Paul Newcome

You would only use a single COUNTIFS (no AND function) that covers all three variables.

Ed Gadd

HI @Paul Newcome How would the revised formula look please?

Paul Newcome

It would be the building, floor, and room range/criteria sets all built into a single COUNTIFS.

COUNTIFS(range1, criteria 1, range 2, criteria 2, range 3, criteria 3)

Ed Gadd

Hi @Paul Newcome Thanks very much I can see how that would work now. Much appreciated.

Paul Newcome

Happy to help. 👍️