# EVENT_DEFINITION_VERSION_NOT_FOUND

- Surface: API
- HTTP status: 404

## Cause

The requested Event Definition Version does not exist under this Event Definition.

## Fix

List the Event Definition's published Versions and use one of those references. Publish a new Version when the intended contract does not exist yet.

## Related

- [EVENT_DEFINITION_NOT_FOUND](https://splitch.dev/docs/error/EVENT_DEFINITION_NOT_FOUND)
- [EVENT_DEFINITION_UNPUBLISHED](https://splitch.dev/docs/error/EVENT_DEFINITION_UNPUBLISHED)
- [EVENT_DEFINITION_IMMUTABLE](https://splitch.dev/docs/error/EVENT_DEFINITION_IMMUTABLE)

Source: https://splitch.dev/docs/error/EVENT_DEFINITION_VERSION_NOT_FOUND