| Semantic unit | 2.2 eventType |
| Definition | A categorization of the nature of the Event. |
| Obligation | Mandatory |
| Repeatability | Not repeatable |
| Rationale | Categorizing Events will aid the preservation repository in machine processing of Event information, particularly in reporting. |
| Data constraint | Value should be taken from a controlled vocabulary. A controlled vocabulary is available at: |
| Controlled vocabulary | http://id.loc.gov/vocabulary/preservation/eventType.html  |
| Examples | E77 [a code used within a repository for a particular Event type] ingestion migration validation |