ArcGIS Pro 2.6 API Reference Guide
GeometryObjectException Class
Members 

ArcGIS.Core.Geometry Namespace : GeometryObjectException Class
Indicates there is a problem with a geometry parameter passed to a GeometryEngine function. For example the geometry is empty or non z-aware (when passed to a function expecting a z-aware geometry).
Syntax
Inheritance Hierarchy

System.Object
   System.Exception
      ArcGIS.Core.Geometry.GeometryException
         ArcGIS.Core.Geometry.GeometryObjectException
            ArcGIS.Core.Geometry.NullGeometryObjectException

Requirements

Target Platforms: Windows 10, Windows 8.1, Windows 7

See Also

Reference

GeometryObjectException Members
ArcGIS.Core.Geometry Namespace