We also received the same error code. For the first time we were rejected for the last 25+ years using TurboTax. Our filing as "Married Filing Jointly (MFJ)" never changed. Verified my (as spouse) PIN was the same as in 2020 filing. AGI $amount was populated by TurboTax but it was as MFJ. We talked to a rep who was very patient with us, she consulted with one of the techs and advised us to enter "0". So we did and it WORKED.
