=IF(ISNA(MATCH(B15,A:A,0)),"","X")

--
HTH

Bob Phillips

"ClaytonS" wrote in message
...
I have to columns and basically want to say IF B15= any cell in Column A,
put
an "X" in this cell. If it does not equal a number in columan, leave it
blank. I am not sure how to write this statement. I'm trying to verify
Journal entry numbers that are posted when i pull them into a spreadsheet
from Oracle.

Any help would be greatly appreciated.

thanks - ClaytonS