---
title: SynchronizationService.Identifier
framework: realitykit
role: symbol
role_heading: Type Alias
path: realitykit/synchronizationservice/identifier
---

# SynchronizationService.Identifier

A type that represents a synchronization service identifier.

## Declaration

```swift
typealias Identifier = UInt64
```

## See Also

### Entity ownership synchronization

- [SynchronizationService](realitykit/synchronizationservice.md)
- [SynchronizationPeerID](realitykit/synchronizationpeerid.md)
- [SynchronizationComponent](realitykit/synchronizationcomponent.md)
- [SynchronizationComponent.OwnershipTransferMode](realitykit/synchronizationcomponent/ownershiptransfermode-swift.enum.md)
- [SynchronizationComponent.OwnershipTransferCompletionResult](realitykit/synchronizationcomponent/ownershiptransfercompletionresult.md)
- [SynchronizationEvents](realitykit/synchronizationevents.md)
- [HasSynchronization](realitykit/hassynchronization.md)