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# CKShare.SystemFieldKey

Constants that represent the system fields of a share.

```
enum SystemFieldKey
```

## Topics

### Constants

[`shareType`](/documentation/CloudKit/CKShare/SystemFieldKey/shareType)

The system field key for the share’s type.

[`title`](/documentation/CloudKit/CKShare/SystemFieldKey/title)

The system field key for the share’s title.

[`thumbnailImageData`](/documentation/CloudKit/CKShare/SystemFieldKey/thumbnailImageData)

The system field key for the share’s thumbnail image data.


---

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