I finally reached TurboTax tech support. The agent checked with her supervisor and was told TurboTax can not e-file amended tax returns. So it appears this was never implemented nor are there any plans to ever support e-filing amended forms at least for tax years 2019 to 2021. So even though the IRS accepts amended forms via e-file and TurboTax in numerous pages states you can e-file amended tax returns it is just a lie as it never existed nor will it exist so don't need to wait and now I have to mail it.
