Hi ,
If you do not want to use an additional column in your table , try this formula :
=SUM(--(FREQUENCY(IF(Table1[Emp Code] = $M6, IF(Table1[Customer Type] = N$5, IF(TEXT(Table1[Date], "mmm") = TEXT($N$4, "mmm"), MATCH(Table1[Product Code],Table1[Product Code],0)))),MATCH(Table1[Product...