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# WKExtendedRuntimeSessionErrorCode.notYetStarted

The app invalidated the session before it started.

```
case notYetStarted
```

## Discussion

The app called the [`invalidate()`](/documentation/WatchKit/WKExtendedRuntimeSession/invalidate()) method on a session before calling its [`start()`](/documentation/WatchKit/WKExtendedRuntimeSession/start()) method.

---

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