There is a problem while updating any item in datasheet view of discussion list. While editing any item I get error as "you must specify non-blank value for Name". even though there is no column named 'Name' ? I checked type conflicts as well. but there is not any.! Any idea?
Please check if you had set any hidden fields to non-blank. If so, you need to change the option "Require that this column contains information" of them to "no". See the following article: