---
title: notificationUUID
framework: appstoreservernotifications
role: symbol
role_heading: Type
path: appstoreservernotifications/notificationuuid
---

# notificationUUID

A unique identifier for the notification.

## Declaration

```data
string notificationUUID
```

## Discussion

Discussion The App Store server assigns a unique identifer to each notification it sends. Use this value to identify, and ignore, duplicate notifications.

## See Also

### Response types

- [notificationType](appstoreservernotifications/notificationtype.md)
- [subtype](appstoreservernotifications/subtype.md)
- [version](appstoreservernotifications/version.md)
- [signedDate](appstoreservernotifications/signeddate.md)