=IFERROR(SUMIFS({# tags}, {TaggedBy}, Employee1, {QAedCebu}, MONTH(@cell) = 10), " ")
Formula Breakdown: (Reference Sheet A contains all tags, dates and employee assignments, Sheet B is the sheet I am trying to create totals on)
# tags = Number Column (ref to sheet A column)
TaggedBy = Employee Name Column (ref to sheet A column)
Employee1 = Reference filed for Employee Name (Sheet 
QAedCebu = Number Column (ref to sheet A column)
MONTH(@cell) = 10 (Ref to Sheet A column)
The strange this is that I am able to pull accurate totals for a majority of the employees for the assigned month but there are 2-4 employees that are showing no totals (blank). I would expect this if they did not have any numbers for this month but they do contain totals that match these dates.
What is the best way to troubleshoot this type of issue? Why would it be working for some and not others?
HELP

