Perhaps your K range contains text rather than dates?
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David Biddulph

"Mark R" wrote in message
...
Hi,

This formula is returning a #VALUE. Can anyone see an error in it

=SUMPRODUCT(--(Mortgages!$C$17:$C$997<""),--(Mortgages!$F$17:$F$997="A&l"),--(YEAR(Mortgages!$K$17:$K$997)=2007))