| Semantic unit | 3.1 agentIdentifier |
|---|
| Definition | The designation used to uniquely identify the Agent within a preservation repository system. |
| Obligation | Mandatory |
| Repeatability | Repeatable |
| Rationale | Each Agent associated with the preservation repository must have a unique identifier to allow it to be related to Events and Rights statements. |
| Data constraint | Container |
| Creation /
Maintenance notes | An identifier may be created by the repository system, or it may be created or assigned outside of the repository. Similarly, identifiers can be automatically or manually generated. Recommended practice is for repositories to use an identifier automatically created by the repository as the primary identifier in order to ensure that identifiers are unique and usable by the repository. Externally assigned identifiers can be used as secondary identifiers in order to link an Agent to information held outside the repository. |
| Usage notes | Identifiers must be unique within the repository. The agentIdentifier is repeatable in order to allow both repository-assigned and externally-assigned identifiers to be recorded. See Creation/Maintenance notes, above. |
