=SUMIF(Unique!$F$1:$F$500,BU!$A2,Unique!$M$1:$Y$50 0)
Yes, although Excel accepts the above expression as-is, in actuality only
the leftmost col M is operative, as you found out

Try using sumproduct for multi-cols:
=SUMPRODUCT((Unique!$F$1:$F$500=BU!$A2)*Unique!$M$ 1:$Y$500)
Above lightly tested ok. If it works, click the YES below
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Max
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"Ken" wrote:
Excel2003 ... Sumif?

=SUMIF(Unique!$F$1:$F$500,BU!$A2,Unique!$M$1:$Y$50 0)

Is only returning the SUM of Values found in Col "M"???

Above said ... the values in Range F1:F500 are NOT contiguous ...

Please provide guidance ... Thanks ... Kha