Hello
=IF(OR(ISBLANK(B3)), "", SUM(B3)*NETWORKDAYS("01/01/2023", "31/12/2023", 'Lists (Hide)'!$D$2:$D$26)/2)
If I enter non-numerical value in column "B" where the above formula sums from, it returns "0".
I was planning to use IFERROR with the above formula to return a message if a...