I've e-filed my 2021 tax return through turbotax desktop software, and got rejected due to ssn typo.
And I tried to follow the amend procedure to amend and e-file. However it tells me unable to e-file and the reason being
What does mean I haven't e-filed the 1040 through TurboTax?
If your first original return was rejected then it wasn't filed. You do not amend. Just fix it and resend it. Go through the File tab again. But you might need to undo or delete the amended return you started.
How to delete an Amended return in the Desktop program,
If it's rejected because the social security numbers didn't match, I don't think you should have to amend, just correct the number and resubmit your tax return. That's why it's not registering as filed.
If your first original return was rejected then it wasn't filed. You do not amend. Just fix it and resend it. Go through the File tab again. But you might need to undo or delete the amended return you started.
How to delete an Amended return in the Desktop program,