David, from what I can see of the docs, for 9.6 it is PROCEDURE. It seems FUNCTION didn't appear until 11.
Steve On Fri, Feb 12, 2021 at 7:05 AM David G. Johnston < david.g.johns...@gmail.com> wrote: > > On Thursday, February 11, 2021, Steve Baldwin <steve.bald...@gmail.com> > wrote: > >> Try ... EXECUTE PROCEDURE customer_num_informix() >> > > > FUNCTION, not PROCEDURE > > David J. >