ArcGIS Pro 3.4 API Reference Guide
ArcGIS.Desktop.Core.Geoprocessing Namespace / IGPResult Interface / Messages Property
Example Version

Messages Property
All output messages. To filter only one type of messages use GPMessageType (Warning, Error) - see code example below.
Syntax
Example
var warnings = result.Messages.Where(it => it.Type == GPMessageType.Warning);
Requirements

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3 or higher.
See Also