What the Letter Was Supposed to Say
While the contents of these letters was completely incorrect, there actually was supposed to be a letter sent. According to the Taxpayer Advocate Service, the letter was supposed to inform recipients that the IRS could not process their first stimulus check. This was a result of the IRS not processing their 2019 tax return, and having no 2018 to fall back on. If you happen to be one of the thousands of Americans in this situation, you can claim the Recovery Rebate Credit on your 2020 tax return.