Try


=SUMPRODUCT(SUMIF(INDIRECT("'"& {"sheet1","sheet2","Sheet3"}
&"'!A:A"),"Product1",INDIRECT("'"& {"sheet1","sheet2","Sheet3"} &"'!B:B")))

--
Jacob (MVP - Excel)


"Nikki" wrote:

I have 5 categories that I need to sum but it is on another tab. I can't
remember how to use the Sumif and vlookup formula together.

Product A = 100
Product A = 100
Product A = 300

a vlookup will only give me the first hit but I need all three totals for
product A so Product A = $500 instead of the first one it finds Product A =
$100