I am trying to efile my 2020 amended federal tax return and it was rejected with the following error:
/Return/ReturnHeader/FilingSecurityInformation/TotalPreparationSubmissionTs - Data in the return is missing or invalid. Please double check your entries.
It looks similar to this other post but that was a amended state return.
I also cannot seem to amend my 2020 return online anymore. It directs me to the desktop version now.
