JJK2
Level 1

After you file

Understood..  in some cases, 1040X can be e-filed, in some situations, maybe not.

My point is, TT shouldn't signal up front "you're going to need to file this by mail" if there remains some chance that e-file may be available.  Up front, say "you *may* have to file by mail, we'll let you know when we've determined your options".  Then later, then later, when TT has enough information to know the options, let the user know what those options are. 

We filed on paper because TT told me up front that was necessary.  Only afterward did I realize e-file probably would have been an option- an annoying discovery at that point.