My AIG is the number I submitted form line 8b on last year's accepted return. This same number that TurboTax filled in blank. Checked several times, same number. Why is it rejected, e file.
Did you file your return on paper late last year? The IRS may not have processed your return yet. Then you would enter 0. I would recommend getting a free transcript of your 2019 return through IRS.gov. There you can check on the AGI the IRS has on file for you. Click here to access your tax return information