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# CBCentralManagerRestoredStateScanServicesKey

An array of service IDs for use when restoring state.

```
let CBCentralManagerRestoredStateScanServicesKey: String
```

## Discussion

The value associated with this key is an <doc://com.apple.documentation/documentation/Foundation/NSArray> of service UUIDs (represented by [`CBUUID`](/documentation/CoreBluetooth/CBUUID) objects) containing all the services the central manager was scanning for at the time the system stopped the app.

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