Which of the following elements is NOT part of the outgoing message definition?

The correct element that is not part of the outgoing message definition is the incoming data validation. Outgoing message definitions focus on how messages are structured, formatted, and processed when being sent out from the system. This includes defining the message type, establishing field mappings to ensure that the data is aligned correctly according to specifications, and outlining the message generation process to ensure that all parts of the message are correctly constructed before transmission.

Incoming data validation, on the other hand, pertains to the processes and rules that are applied to data as it enters the system. This ensures that incoming data meets certain criteria and standards before it is accepted and processed. While crucial for maintaining data integrity, it does not directly relate to the outgoing message definitions. Such validation is focused on the incoming data quality rather than the characteristics of messages that are being sent out.