Prabha,
Take a look at the syntax of your ISNA function.
The previous post answered to your question already.
You should lose the ="" after the ISNA parenthesis.
The syntax for ISNA is (as Frank already noted):
IF ( ISNA ( formula ), "", formula ) , and not: IF ( ISNA (formula )
"", "", formula)
I believe that's the way all IS functions work (ISERROR etc.).
This could also have been resolved by using Excel's help.
Regards,
Ale
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Alex Hatzisava
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