ArcGIS Pro 2.8 API Reference Guide
SpatialReferenceImmutableException Class
Members 

ArcGIS.Core.Geometry Namespace : SpatialReferenceImmutableException Class
Thrown by SpatialReferenceBuilder when attempting to alter a populated spatial reference object.
Syntax
Inheritance Hierarchy

System.Object
   System.Exception
      ArcGIS.Core.Geometry.SpatialReferenceImmutableException

Requirements

Target Platforms: Windows 10, Windows 8.1

See Also

Reference

SpatialReferenceImmutableException Members
ArcGIS.Core.Geometry Namespace