thank you; yes, I have the 1095A.

I've since been working on this - and after deleting all the information and reinputting it - the form is generating.  There must have been an invisible character somewhere or an unchecked box.

Thankfully this return rejected the 1040 for lack of the form; unfortunately California went through and now I'll need to amend it.

I wish there had been a "diagnostic" that the 1095A information was incomplete so that I wouldn't have eFiled California thinking it was correct.  Sigh.  Life in tax, eh!  LoL!