ArcGIS Pro 3.0 API Reference Guide
ArcGIS.Core.CIM Namespace / CIMProjectItem Class / SourceURI Property

SourceURI Property (CIMProjectItem)
Gets or sets the source URI of the item. Set if sourced from an external item such as an item on a portal.
Syntax
public string SourceURI {get; set;}
Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

ArcGIS Pro version: 2.0 or higher.
See Also