ArcGIS Pro 2.6 API Reference Guide
SourceModifiedTime Property (Project)

ArcGIS.Desktop.Core Namespace > Project Class : SourceModifiedTime Property
Gets the time when the item's source item was last modified
Syntax
public TimeInstant SourceModifiedTime {get; set;}
Public Property SourceModifiedTime As TimeInstant
Remarks
When a web map is added to a project, the map in the project has a source modified time that can be compared to the original web map's modification time. The map can be synched with any updates made to the web map.
Requirements

Target Platforms: Windows 10, Windows 8.1, Windows 7

See Also

Reference

Project Class
Project Members