| ItemIdInfo | The Item ID Information Aggregate is architectural in nature. It is used to identify an aggregate uniquely across transactions. |
| Link | Link provides a mechanism to hyperlink between resources. It is not expected to contain data, instead typically appears as (e.g.): <Link rel="self" href="/policy/4e068b48-798c-4df1-8d1d-ea2a90f4eb4c" title="Self"/>. |
| SourceDesc | A description of the system where the corresponding data originated. |
| SourceName | A word or phrase commonly used to describe the system where the corresponding data originated. |
| SourceSystemCd | A shorthand representation used to uniquely describe the system where the corresponding data originated. |
| SourceSystemQualifierCd | A code that describes the role of the source system in regards to the data being referenced. |
| UpDt | The date/time of the last update. |