Received similar IRS letter of error "Recovery Rebate Credit", and Adjustment of -1400 listed. Could not find IRS Letter 6475. Suspicious as everyone else. My records showed EIP3 March 17, 2021 and tax refund March 23, 2021. Would you have looked further ... I didn't. Bank record next page showed a second EIP3 for $1400 on March 31, 2021. I think I made an error by not recognizing this second EIP3, shorted the value I put in TurboTax, resulting in the IRS letter of error.
I will verify ... but since this was a surprise learned during a study of the IRS letter .... I bet that's it for my return.
