Hi
There was a typo, of-course it was 'C8/F8-B8'.
About SUMIF-formula:
Do you want the formula return nothing when there isn't any entry equal to
'Contact Service' in range BFS3!$C$15:$C$34, or you do want exactly what you
asked? When the first is the case, then
=IF(COUNTIF(BFS3!$C$15:$C$34,"Contract
Service")=0,"",SUMIF(BFS3!$C$15:$C$34,"Contract Service",BFS3!$E$15:$E$34))
When second is the case, then
=IF(COUNTIF(BFS3!$C$15:$C$34,"<>")=0,"",SUMIF(BFS3!$C$15:$C$34,"Contract
Service",BFS3!$E$15:$E$34))
(with no 'Contract Service' in range BFS3!$C$15:$C$34, but any other entry
present there, 0 is returned)