Only the 2020 AGI from the 2002 federal tax return Form 1040 Line 11 can be used when e-filing the 2021 tax return.
The IRS may not have your 2020 AGI in their database.
If the IRS rejects your 2021 tax return for the 2020 AGI, then try entering a 0 (zero) for the 2020 AGI and e-file the 2021 tax return again.
