# MessagePackCodec Fields

[Type overview](/orleans/docs/api/csharp/microsoft.orleans.serialization.messagepack/orleans.serialization.messagepackcodec/)

## WellKnownAlias {#wellknownalias-0aec5397}

[Dedicated page](/orleans/docs/api/csharp/microsoft.orleans.serialization.messagepack/orleans.serialization.messagepackcodec/fields/wellknownalias-0aec5397/)

[Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.Serialization.MessagePack/MessagePackCodec.cs)

```csharp
public const string WellKnownAlias
```

The well-known type alias for this codec.