A delimited list would be something like:

Brian,Jimmy,Ralph,Mary,Susan

This list of names is delimited by a comma.

But read that message again--you have to use a single row or a single column if
you want to use a range of cells.

brian wrote:

I'm trying to create a drop down list in a cell, the data range consists of
multiple rows and multiple columns. I have others just like it working in the
same workbook but this time it's giving me an error stating:

"the source needs to be a delimited list or reference to a single row or
column".

I must be doing something wrong.

--

Dave Peterson