# MappingException class

Namespace: [Grasshopper2.Data.Mapping](https://developer.rhino3d.com/api/gh2/namespace/grasshopper2.data.mapping.md) · Assembly: [Grasshopper2](https://developer.rhino3d.com/api/gh2/assembly/grasshopper2.md)

```cs
public class MappingException : Exception
```

Exception used by the Map and Mapping types.

## Constructors

- [MappingException](https://developer.rhino3d.com/api/gh2/type/grasshopper2.data.mapping.mappingexception/ctor.md): Create a new mapping exception.