You will need to amend your tax return. If you need to make a correction on your tax return see this: How do I amend my 2020 TurboTax Online return?
If the IRS has not fully processed your tax return you won't want to amend it until it has been. Additionally the 1040X amended tax return form is not quite ready yet in TurboTax.
Per the IRS amended returns can take up to 16 weeks to fully process. Please see this for more information from the IRS: Amended Returns & Form 1040X.
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