Two messages are linked by arrows to illustrate the conversion process. The Messaging Gateway Message consists of an AQ Property and a Canonical Body. The TIB/Rendezvous Message consists of Fields and Supplementary Information.
Arrows labeled Outbound Propagation point from the Messaging Gateway Message to the TIB/Rendezvous Message, linking AQ Property to Fields, Canonical Body to Fields, and Canonical Body to Supplementary Information. Arrows labeled Inbound Propagation form the same links, but pointing in the other direction.