You are doing an AND test instead of OR.

Try

=SUMPRODUCT((ACtuals!A2:A630={5010111,5010211,5120 111,5200111,5200211,5260111,5260211,5400111,540021 1,5400311,5401211,5440111,5480111,5640111,5640211} )*(ACtuals!C2:C630))

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HTH

Bob

"Caroline" wrote in message
...
Hi Mike

Sorry to bother you again. Can you see the problem with this formula? I
don't need to pick up a range of codes, I need a selection of different
codes, but from the same data as before. This is returning zero as the
answer. (Sorry it's long, but thought it was easier to send the whole
thing!)

=+SUMPRODUCT((Actuals!A2:A630=5010111)*(Actuals!A2 :A630=5010211)*(Actuals!A2:A630=5120111)*(Actuals! A2:A630=5200111)*(Actuals!A2:A630=5200211)*(Actual s!A2:A630=5260111)*(Actuals!A2:A630=5260211)*(Actu als!A2:A630=5400111)*(Actuals!A2:A630=5400211)*(Ac tuals!A2:A630=5400311)*(Actuals!A2:A630=5401211)*( Actuals!A2:A630=5440111)*(Actuals!A2:A630=5480111) *(Actuals!A2:A630=5640111)*(Actuals!A2:A630=564021 1)*(Actuals!C2:C630))

Thanks again
Caroline