C2MS11 — Make all subjects be buildable from fields in the message

Almost all miscellaneous subject elements for messages are specified as mapping to fields in the message. But a few are not. For example, see the Miscellaneous Elements table 8-46 for the Control message. The elements DESTINATION_NODE and DESTINATION_FACILITY do not exist as fields in the message. (Note: it may be more appropriate to add some of these fields to the Message Header rather than many/most messages.) In this particular example, this may be resolved by C2MS11-28, but each message type would need to be evaluated to see what other subject elements are not mapped to fields.