@rcfox Does the list you received include Form 7202 by any chance? I think it's the same situation as Form 8915-E. Form 7202 is the credits for sick leave and family leave for self-employed individuals and I'm sure there's going to be quite a large number of these as well.

Not being able to e-file or at least attach as a PDF is going to put people in a very bad situation if we end up having to give hardcopies for clients to mail in.