So I inherited a program that has the following formula:
=SUMIF('National Feeder'!$C$40:$C$45,markets!$E$73,'National Feeder'!$D$40:$D$45)
However I need to add ISERROR to this formula somehow, and when I try:
=SUM(IF(ISERROR('National Feeder'!$C$40:$C$45,markets!$E$73,'National...