ArcGIS Pro 3.0 API Reference Guide
ArcGIS.Core.CIM Namespace / CIMUniqueValueClass Class / AlternateSymbols Property

AlternateSymbols Property (CIMUniqueValueClass)
Gets or sets an array of symbol references that are intended to be used at specific scale ranges.
Syntax
public CIMSymbolReference[] AlternateSymbols {get; set;}
Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

ArcGIS Pro version: 2.0 or higher.
See Also