Same issue.  What is strange is the error was not present when I first submitted the return.  The first reject was due to the ACA Explanation.  That cleared with the suggestions found on the Community.  Now this!  I don't think I've ever experienced anything like this  in the 25+ years I've been processing return in ProSeries.  I've done this return for at least 5 and never had a reject relating to the form 1116 Schedule B.

I'm wondering if anyone has suggestions on printing to PDF just a particular form in ProSeries Basic.  The only way I've been able to print just one form is to go to file/print and uncheck all except the form I need.  I'm sure there is a better way!