Datasheet view shows un resolved Errors

Scenario:
From my previous post , I got some more ideas and thought of what will happen if I enable Check in/Check out feature for documents and try to edit the metadata in Datasheet view. I got this.



Solution:
Solution is self explanatory , item need to be checked out before It can be edited. But the thing I liked this time was that view was aware of the problem. Microsoft is Microsoft.