VMS Help EDT Routines, EDT$EDIT, Condition Values Returned  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    SS$_NORMAL         Normal successful completion.
    EDT$_INPFILNEX     /NOCREATE specified and input file does not
                       exist.

    This routine also returns any condition values returned by user-
    supplied routines.