I am using the Data -- Validation feature in Excel. Each cell using this
function references a specific set of cells for the desired list of
selections for each user to input. Occaisionally the user will copy and paste
incorrect data into the cell and it will avoid the error alert that I have
set up for these cells. How can I make the error alert appear (or prevent the
user from entering this incorrect information) even when they copy and paste
the data?

Thank you,