Hello,

VMD’s are necessary when working with either HL7 v2 messages or X12 messages. They are what define the structure and rules of the incoming and outgoing messages so that Iguana can parse them effectively. You are correct in assuming that you need a VMD to define your inbound message and your outbound message if you wish to map data between the two of them.

VMD’s can be created using our Chameleon application.

Pearce