=IF(COUNTIF($A$1:$A$23,B1)=0,"Flag","")

And fill down.

HTH
Regards,
Howard

"ExcelN00B06"
wrote in message
...

Hi all,

Perhaps you may have heard this question a thousand times but here it
is again for the thousand and one time. I have two column of IDs that I
am trying to compare and figure out which one is missing.

The IDs look like this:

KD036078 AS070634
MS028846 AA063405
RV009526 AG059891
SG033911 ak071410
AR053757 AP056068
BD028031 AT067547
BP044319 AC054501
DC032030 AP054795
DN047994 AT038118
JD016833 AS048834
JW047209 AS068626
MB030686 AL054618
RS061603 AM040365
SK005695 AM047477
SL020353 AQ039733
VC059131 AR072148
JK038041 AC028342
RO034327 AG063351
HK071317 AP032493
MM050011 TPAO8173
AC057342 AF052939
FK053590 AP035357
HP051837 AB029329

So basically, I would like to match let's say ID KD036078 in the first
row to the second row to see first if it exists and then if not, send a
flag.

I've tried working with HLOOKUP, VLOOKUP, and MATCH but to no avail.
ANY assistance, advice or guidance you can provide is greatly
appreciated.

Thanks all,

ExLN00B06


--
ExcelN00B06
------------------------------------------------------------------------
ExcelN00B06's Profile:
http://www.excelforum.com/member.php...o&userid=33576
View this thread: http://www.excelforum.com/showthread...hreadid=533551