With no tax withholding, the only thing you should have to send to the IRS from entering the code P 2022 Form 1099-R into 2021 TurboTax to amend your 2021 tax return is Form 1040-X with a change to your AGI by the amount in box 2a of the Form 1099-R and a corresponding change to your tax liability, resulting in a balance due.
