Good morning.  I previously posted about preparing a 2023 1040x for a new client.  I did not prepare or file their original 2023 1040.  I prepared the amended return and I am now trying to determine if I can efile it?  I reviewed this article:

Amending an individual return (1040X) in ProSeries

But I am receiving error messages when trying to prepare the efile.  specifically, I'm being alerted that I cannot file an amended return if the original return was not efiled.  I did check the box indicating the original return was successfully efiled.  

I would appreciate any thoughts.  Thank you.