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# PKPassLibraryNotificationKey

The user info keys that a pass library notification uses.

```
struct PKPassLibraryNotificationKey
```

## Topics

### Creating a pass library notification key

[`init(rawValue:)`](/documentation/PassKit/PKPassLibraryNotificationKey/init(rawValue:))

Creates a pass library notification key according to the provided raw value.

### Notification keys

[`addedPassesUserInfoKey`](/documentation/PassKit/PKPassLibraryNotificationKey/addedPassesUserInfoKey)

An array of added passes.

[`passTypeIdentifierUserInfoKey`](/documentation/PassKit/PKPassLibraryNotificationKey/passTypeIdentifierUserInfoKey)

The pass’s pass type identifier.

[`recoveredPassesUserInfoKey`](/documentation/PassKit/PKPassLibraryNotificationKey/recoveredPassesUserInfoKey)

[`removedPassInfosUserInfoKey`](/documentation/PassKit/PKPassLibraryNotificationKey/removedPassInfosUserInfoKey)

An array of dictionaries that describes the removed passes.

[`replacementPassesUserInfoKey`](/documentation/PassKit/PKPassLibraryNotificationKey/replacementPassesUserInfoKey)

An array of replaced passes.

[`serialNumberUserInfoKey`](/documentation/PassKit/PKPassLibraryNotificationKey/serialNumberUserInfoKey)

The pass’s serial number.


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