# SystemTarget.SystemTarget

[Type overview](/orleans/docs/api/csharp/microsoft.orleans.runtime/orleans.runtime.systemtarget/) | [Constructors](/orleans/docs/api/csharp/microsoft.orleans.runtime/orleans.runtime.systemtarget/constructors/)

[Source](https://github.com/dotnet/orleans/blob/b7a9e3e1c9c54b3cec3a467c5734bf7744541bcf/src/Orleans.Runtime/Core/SystemTarget.cs#L20-L66)

```csharp
[System.Obsolete(Do not call the empty constructor.)]
protected SystemTarget()
```

Obsolete parameterless constructor for [SystemTarget](/orleans/docs/api/csharp/microsoft.orleans.runtime/orleans.runtime.systemtarget/). 

Breaking change: This constructor is obsolete and will throw a `System.NotSupportedException` if called. It is present only to satisfy certain reflection-based scenarios and should not be used in application code.

If you are using reflection or serialization frameworks that require a parameterless constructor, update your code to use the constructor with parameters: [SystemTarget](/orleans/docs/api/csharp/microsoft.orleans.runtime/orleans.runtime.systemtarget/).