In C1 enter =IF(COUNTIF($B$1:$B$6,A1),"", A1 & " is missing")
Copy it down the column
Or use: =IF(ISNA(VLOOKUP(A4,$B$1:$B$6,1,0)),"Missing & A1", "")

best wishes
--
Bernard V Liengme
Microsoft Excel MVP
http://people.stfx.ca/bliengme
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"Gemi" wrote in message
...
I am not sure what is the best way to do this: I have two columns that in a
worksheet are usually a few rows off. Column A contains a list of all the
account numbers Column B is missing some of the account numbers. I need to
find the missing accout numbers and enter them in Column C. In the
reference
below I would want to know that cell A5 AAC100L is not located in any cell
in
Column B. I am looking for non matches between the columns. I tries a
couple
of different formulas but they stop when the columns are not an exact
match
on the same row.
Any suggestions?
Column A Column B
AAC100A AAC100A
AAC100C AAC100C
AAC100H AAC100H
AAC100L AAC100M
AAC100M AAC100N
AAC100N AAC100P


Thank you,
Lisa