If you filed late last year or paper filed there is a good chance that the 2020 AGI never was entered into the e-file database. Try using 0 (zero) for the AGI.
See this TurboTax FAQ on how to find your AGI
https://ttlc.intuit.com/community/agi/help/how-do-i-find-last-year-s-agi/00/25947?search-action-id=2...
You can get free 2020 tax transcript from the IRS
https://www.irs.gov/individuals/get-transcript
If you filed an amended return use the AGI on the first filed tax return.
If it continues to reject then the AGI in the IRS database might be in error. Mail filing is the only option.
**Disclaimer: This post is for discussion purposes only and is NOT tax advice. The author takes no responsibility for the accuracy of any information in this post.**
