Don't be frustrated like I was when you encounter this error after multiple tries with entering different AGI numbers to correct the problem. The following steps will resolve this efile issue;
1. Create an account with IRS in IRS.GOV for both you and your joint filer, if you already don't have one. (https://www.irs.gov/pub/irs-pdf/p5507.pdf)
2. Generate IP PIN in for your IRS accounts for both you and your joint filer. (https://www.irs.gov/iden[product key removed]-scams/get-an-identity-protection-pin)
3. Update your IP PIN in your tax return for both you and your joint filer. This can be done via Federal Taxes- Other Tax Situations menu - Other Return Info - Identity Protection PIN - in Turbo Tax.
4. Review your return in Turbo tax and make sure your form 1040 form has the IP PIN filled.
5. efile your return.
Cheers.
