Hi there. I have a column that is concatenate of many columns and I want to find duplicates within that column. I have used the countif to find duplicates many times but have never had an issue. I'm just checking a box if there is more than one. Here is the formula I'm using: =IF(COUNTIF(String:String, String@row) > 1, 1)
The string is 16 columns of data that include Text, checks, and dates. The string looks good to me and pulls it all together just fine, not sure why the Countif isn't working.