I, too, have had the same old problem of supposed AGI mismatch between what has been entered in TurboTax and the value on file with the IRS for 2 years in a row now. And as others have reported, IRS Tax Return transcripts for the last 2 years have shown that the TurboTax-entered AGI and the one in IRS records are identical. Repeating the efiling process didn't help.
What DID help has creating an IRS IP [Identity Protection] PIN using the IRS online tool: Click the "Get an IP PIN" button at https://www.irs.gov/iden[product key removed]-scams/get-an-identity-protection-pin , sign in to your IRS account, click the "Continue" button and follow the prompts to continue to get the IP PIN. (You'll need to get one for a co-filer with their IRS account, too, if you're filing jointly.)
With The IP PIN(s) in hand, open TurboTax, click the "Federal Taxes" tab, then > "Other Tax Situations" > scroll down to "Other Return Info" > "Identity Protection PIN" > Update. Follow the prompts to reach the page to enter your IP PIN(s), and then continue to start the efiling process from the beginning again.
Be aware that the 6-digit IP PIN is NOT the same as the 5-digit "self-select" PIN which you encounter in the normal efiling process; just leave your previously entered self-select PIN(s) alone. At any rate, the third attempt to get efiling accepted by the IRS this year worked very swiftly when IP PINs were used. Could it be that providing IP PINs overrides any requirement for an AGI match between TurboTax and the IRS? Maybe it was just coincidence that it happened to work for me--it might have simply been destined to work on the third attempt regardless of what I tried--but it still might work for others out there!
