You should have an e-mail notifying you that the return was rejected. It has a link to Fix the return. After you sign into your account it should show you the problem near the top of the page. On the right side, look for a link to 'Revisit'. Your AGI should be displayed and can be changed. Try to e-file again, but don't be surprised if it fails again. The IRS confirmed that my AGI was correct, but could not explain why the e-file was failing. They basically gave up and just told me to mail my return. Ugh! Getting IP PIN fixed the problem...
-Jay
