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# CKSyncEngineWillFetchRecordZoneChangesEvent

The sync engine finished fetching record zone changes from the server for a specific zone.

```
@interface CKSyncEngineWillFetchRecordZoneChangesEvent : CKSyncEngineEvent
```

## Overview

This might be a good signal to perform any post-processing tasks on a per-zone basis if necessary.

You should receive one [`CKSyncEngineDidFetchRecordZoneChangesEvent`](/documentation/CloudKit/CKSyncEngineDidFetchRecordZoneChangesEvent) for each `CKSyncEngineWillFetchRecordZoneChangesEvent`.

## Topics

### Identifying the record zone

[`zoneID`](/documentation/CloudKit/CKSyncEngineWillFetchRecordZoneChangesEvent/zoneID)

The associated record zone’s unique identifier.


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