First time in 10 years since I've entered into a domestic partnership that I have taken on my household taxes by myself (with the help of Turbotax Deluxe download program).  I think I did everything okay (completed joint return to calculate state taxes then went back and completed individual federal returns filing us both as "single").

But just learned my partner's return was rejected.  And I think it is because I created the Intuit account, I completed the taxes and so... it was probably because Turbotax applied my electronic signature on his fed return.

What steps do I need to take to correct his return?  I really would rather not mail it in (already have to do that for state as is) if at all possible.