---
title: generationMarker
framework: ContactProvider
role: symbol
role_heading: Instance Property
platforms: [iOS 18.0+, iPadOS 18.0+]
path: contactprovider/contactitemsyncanchor/generationmarker
---

# generationMarker

A value specific to your data source identifying the database generation you’re enumerating for changes.

## Declaration

```swift
var generationMarker: Data
```

## See Also

### Inspecting sync anchor properties

- [offset](contactprovider/contactitemsyncanchor/offset.md)