ArcGIS Pro 3.4 API Reference Guide
ArcGIS.Desktop.Editing Namespace / EditOperation Class / Merge Method
Version

Merge Method
Merge features.
Overload List
OverloadDescription
Merge features into a new feature defined by a feature template.  
Merge features into a new feature in a layer with attributes.  
Merge features within a layer into a new feature with attributes.  
Requirements

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3 or higher.
See Also