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# senderParticipantIdentifier

A UUID identifying the participant that sent the message.

```
var senderParticipantIdentifier: UUID { get }
```

## Discussion

The value of this UUID is scoped to the current device. Each device participating in the conversation will have a different UUID for the message’s sender.

By default, the `senderParticipantIdentifier` property is set to `nil` when a new message is first instantiated. It is set to the participant’s UUID as soon as the message is inserted into the conversation.

---

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