I have a workbook that I've developed here in the US for use in Europe. I'm having issues with one particular SUMPRODUCT function. In a sense, the file is a tracking log. The user can input dates in column B and select a persons name from a validation list in column D. For some reason the following function works fine in the US, but not for some users in Europe.
Data!$A$17 is the current year and $E$11 is the month.
I assume that it could be due to the date format, but am not positive. The dates in column B are all formatted for Europe ("dd/mm/yyyy").
Any ideas?
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