# StreamDeliveryFailureEntity.SequenceToken

[Type overview](/orleans/docs/api/csharp/microsoft.orleans.streaming.azurestorage/orleans.providers.streams.persistentstreams.streamdeliveryfailureentity/) | [Properties](/orleans/docs/api/csharp/microsoft.orleans.streaming.azurestorage/orleans.providers.streams.persistentstreams.streamdeliveryfailureentity/properties/)

[Source](https://github.com/dotnet/orleans/blob/b7a9e3e1c9c54b3cec3a467c5734bf7744541bcf/src/Azure/Orleans.Streaming.AzureStorage/Providers/Streams/PersistentStreams/StreamDeliveryFailureEntity.cs)

```csharp
public byte[]? SequenceToken
```

Serialized sequence token of the event that failed delivery.