Automatic Mapping of the Sub Element (Composite) and Repetition Separator

For X12 EDI, if the ISA16 element is not mapped, the sub element separator will be automatically emitted. Also the repetition separator is also automatically emitted for the ISA11 element if not otherwise mapped. If you are using a version prior to 4030 where the repetition separator is not used for ISA11, then map it to its proper value.