Has anyone received a form CP23 from the IRS for 2021

The form says we have changed the your 2021 for 1040 to match our record of your estimated tax payments, credits applied from another tax year and/or payments with an extension to file. As a result you xxx $.

 

I am now trying to match what they have sent with with what TT calculated. AGI and taxable income match.  I will report back if I spot the discrepancy.