How do I find out the true reason for rejecting e filling if my AGI is correct?

[MichelleLO]

Please see the below TurboTax help article for a list of potential reasons that returns get rejected due to the AGI and suggested solutions. 

What if I entered the correct AGI and I'm still getting an e-file reject?

For additional information, please see How do I fix e-file reject IND-031-04 or IND-032-04?

[VolvoGirl]

Did the AGI reject?  ENTER 0 FOR AGI. The IRS took a long time last year to process 2021 returns so the AGI didn't get entered in time.  Especially if you mailed it.  That works for most people. See,
https://ttlc.intuit.com/community/rejections/help/what-if-i-entered-the-correct-agi-and-i-m-still-ge...

How to correct the AGI in the Online version
https://ttlc.intuit.com/community/agi/help/where-do-i-correct-my-agi-in-turbotax-online/00/26311

If you can’t get it to efile you will have to print and mail it.
https://ttlc.intuit.com/community/printing/help/how-do-i-print-and-mail-my-return-in-turbotax-online...

Be sure to attach copies of your W2s and any 1099s that have withholding on them.  You have to mail federal and state in separate envelopes because they go to different places.  Get a tracking number from the post office when you mail them for proof of filing.