The format for the bulk of the inbound message is defined by the object structure of the master index, located in the object.xml configuration file. The inbound messages can either conform to the required format for the master index application, or they can be mapped to the correct format in a business process.
In addition to the objects and fields defined in object.xml, you can include standard master index application fields. For example, you must include the system and local ID fields, and you can also include transaction information, such as the date and time of the transaction, the transaction type, user ID, and so on. Transaction fields include the following:
Message Id
EventTypeCode
UserId
AssigningSystem
Source
Department
TerminalId
DateOfEvent
TimeOfEvent
If you do not send these fields into the master index application, default values are used (for example, the date and time fields default to the date and time the transaction is processed by the master index application).