Counts unique values based on 2 criteria in other columns(200.000 records)
Claus,
Thx.
I found the issue. I've got two brothers in de list in column N.
The names in the list are written as 'last name, first name'.
I'd skipped one of them and then it works.
In future I will set another letter in front of one of them.
regards, Johan
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