SMALL function to find smallest number greater than 0
*** CORRECTION ***
The formula should read:
=IF(COUNTIF(Names,$B2)=1,"",IF(SUMPRODUCT(SMALL(IN DEX(Names=
$B2,)*INDEX(LEFT(Codes,LEN($A2))=$A2,)*INDEX(LEN(C odes),),
1))0,"","Duplicate"))
- Ronald K.
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