You are trying to e-file a return that cannot be e-filed. Your amended 2021 return has to be filed by mail. Print it, sign and date it in ink, and mail it in. Use a mailing service like certified mail so you will know the IRS received it. Do not expect quick results from an amended return.
You can watch for information here:
https://www.irs.gov/Filing/Individuals/Amended-Returns-(Form-1040-X)/Wheres-My-Amended-Return-1
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
