Or I should ask "Is there a max number of chars in the source box?" Seems it
only allows ~250 charactors.

"Jin" wrote:

Is there a max number of elements allowed in drop-down list in Excel? I was
using the data validation and entering the list in the "source" box (using ,
as delimiter), after I entered 34 elements, excel does not allow me to enter
more element to the drop down list.