You must be asking about a 2020 or 2021 tax return since there is no recovery rebate credit on a 2022 return. Lots of people made mistakes with the recovery rebate credit. The IRS looks for those mistakes. If you said you did not get the stimulus check and have the credit on line 30 of your Form 1040, the IRS will reduce your refund. They know if you received it. You do not need to amend. The IRS corrects that mistake for you.
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