2020 agi from 1040 line 11 also the amount from the original return (not amended). if you filed after 10/15/2021 try zero. if that doesn't work and you've checked both your return and IRS transcript, you'll have to paper file. this happens every year. even when the taxpayer claims to be using the correct AGI, the IRS rejects it. no explanation has been provided. no reason has been determined
