## FhircastEventVersionOptional type [​](/content/docs/sdk/core.fhircasteventversionoptional#fhircasteventversionoptional-type/index.html)

**Signature:**

```typescript
export type FhircastEventVersionOptional = Exclude<FhircastEventName, FhircastEventVersionRequired>;
```

**References:** [FhircastEventName](/content/docs/sdk/core.fhircasteventname), [FhircastEventVersionRequired](/content/docs/sdk/core.fhircasteventversionrequired)

- [FhircastEventVersionOptional type](/content/docs/sdk/core.fhircasteventversionoptional#fhircasteventversionoptional-type/index.html)