Hi all,
I have the following LOOKUP formula
=IF(C3&I3="","",IFERROR(LOOKUP(9.99999999999999E+307,1/(($FL$3:$FL$10002=C3)*($FM$3:$FM$10002=I3)),$FO$3:$FO$10002),"Backorder"))
This seems to work most of the time but for some reason results "" when there is nothing found in FO3:FO10002
Sometimes...