Think the key sequence that probably happened (when you created the DV in
B40) was that A40 already contained something (it wasn't blank). That's why
you didn't get any error msg. But when you tried to do the same thing, ie
create the DV in B41 via repeating the DataValidation steps, "unfortunately"
A41 was empty, so Excel resolutely threw you the error.

Once you create the 1st DV in B40 (well, you know now how to get it started
- put something into A40), think you could just drag B40 down to propagate
the DVs as desired.
--
Max
Singapore
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xdemechanik
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"Rick Arends" wrote:
I have a drop down list in cell B40. In the validation I wrote
=If(A40="","",FORTYB) where "FORTYB" is the name of a list. It worked
perfectly, only filling the list if cell 40A had data in it. I then tried to
enter the same format in B41 and it gave me an error something to the effect
of needing a delimited list. I copied the workbook and tried to redo the same
thing I had done in the original A40. Could someone tell me what I have done
wrong? I don't even know that it was supposed to work in the first place!