| Object | Group | Definition | Explanatory Text | Link to GSIM |
| Representation | Base-Package | Allowable value or format for component or concept when reported. | The representation can be enumerated or non-enumerated. An enumerated representation can be a Code List, Concept Scheme, Category Scheme, Organisation Unit Scheme, Data Provider Scheme, Data Consumer Scheme, Agency Scheme. A non-enumerated representation is a specification of the valid content in terms of data types such as boolean, string, date/time, integer. | Value Domain |