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# NSFileProviderErrorNonExistentItemIdentifierKey

The key for accessing the specified item’s identifier when the item doesn’t exist.

```
let NSFileProviderErrorNonExistentItemIdentifierKey: String
```

## Discussion

Use this key to access the item’s identifier from a [`noSuchItem`](/documentation/FileProvider/NSFileProviderError/noSuchItem) error’s <doc://com.apple.documentation/documentation/Foundation/NSError/userInfo> dictionary.

---

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