Hello everyone!
I'm trying to make a formula that sums this year sales by month. I have this formula but it returns #INVALID OPERATION, would you mind helping me fix it. much appreciated.
=SUMIFS([Valeur TTC]:[Valeur TTC], CO:CO = "UD", Date:Date, IFERROR(MONTH(@cell), 0) = 1, Date:Date, IFERROR(YEAR(@cell), 0) = 2019)