After you file

@kck24 Only certain professional tax programs allow e-filing of prior tax year amended federal tax returns, eg. 2021.

E-filing of 2021 tax return using TurboTax closed after October 2022.  A 2021 tax return or amended tax return can only be printed and mailed when using TurboTax.

In the File section of the program choose File by Mail instead of E-filing.