# StreamSubscription.SubscriptionId

[Type overview](/orleans/docs/api/csharp/microsoft.orleans.streaming/orleans.streams.core.streamsubscription/) | [Properties](/orleans/docs/api/csharp/microsoft.orleans.streaming/orleans.streams.core.streamsubscription/properties/)

[Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.Streaming/Core/StreamSubscription.cs#L32)

```csharp
[Orleans.Id(0)]
public Guid SubscriptionId
```

Gets or sets the subscription identifier.

### Value

The subscription identifier.