this is one type of rejection you can do nothing about at the present. if you filed a non-filer form to get the stimulus that was filing of your tax return for 2019. the IRS has not come up with a method, and maybe it never will, to allow taxpayers in this situation to e-file. so if this is your situation you may need to wait. if you owe you must file an extension and pay the balance due by 7/15/2020. your return then won't have to be filed until 10/15/2020. if you don't owe I would still suggest you file an extension and file the return by 10/15/2020.
if you choose not to wait or this is not your situation, you can not e-file. the return must be filed by mail. follow TT filing instructions and I would suggest using a service where you get proof of delivery. the IRS is behind in processing paper returns so if you are due a refund do not expect it in the next 21 days.
