I received an email: We’re contacting you because we identified an error that may have impacted your 2020 tax return. “September 2021 Carryover Issue.” Is this a scam?

Email received from TurboTax and all links work. Seems legit?

After you file

It's legit.  Turbo Tax sent out an email about doubling an amount carried over from your 2019 state tax return involving either the refund amount or balance due.

How do I amend my return to fix the duplicate fede...