ArcGIS Pro 2.6 API Reference Guide
MappingException Class
Members 

ArcGIS.Desktop.Mapping Namespace : MappingException Class
Managed exception base class for custom ArcGIS.Desktop.Mapping exceptions
Syntax
Inheritance Hierarchy

System.Object
   System.Exception
      ArcGIS.Desktop.Mapping.MappingException

Requirements

Target Platforms: Windows 10, Windows 8.1, Windows 7

See Also

Reference

MappingException Members
ArcGIS.Desktop.Mapping Namespace