| ItemDefinition | Used for sending detailed information about a "thing" that is either the insured exposure or related to an insured exposure. This may include any non-licensed vehicle item such as Inland Marine Scheduled Items, Glass and Sign Information, Alarms, etc. |
| ItemIdInfo | The Item ID Information Aggregate is architectural in nature. It is used to identify an aggregate uniquely across transactions. |
| LaunchVehDesc | The description of the launch vehicle(s) for the item. |
| LaunchWindow | The anticipated launch window (effective and expiration dates) of the item. |