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# hasPendingUntrackedChanges

A Boolean value that indicates whether there are pending changes that the sync engine is unaware of.

```
@property (assign) BOOL hasPendingUntrackedChanges;
```

## Discussion

Use this property to inform the sync engine that there are pending changes other than those available in [`pendingRecordZoneChanges`](/documentation/CloudKit/CKSyncEngineState/pendingRecordZoneChanges).
After you set this property, the sync engine automatically schedules a send operation and, when that operation executes, asks your delegate to provide those changes by invoking the [`syncEngine:nextRecordZoneChangeBatchForContext:`](/documentation/CloudKit/CKSyncEngineDelegate-3c38p/syncEngine:nextRecordZoneChangeBatchForContext:) method.

Using this property is optional and is necessary only if you track pending changes manually, outside of the sync engine’s state.

---

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