The OrderChange/ OrderView transaction set requests modifications to an Order by specifying which order items to change and what to change them to. The updated view of the Order is returned. Implementer-Augmented Structure. An instance of a distribution channel. That is, the set of organizations involved in the development of the current transaction. IATA Standard Payload attributes Point of Sale information. Order Change request information. Method of ensuring data integrity and authenticity of parts or entirety of the message.