Integration with Other Applications > Windchill Workgroup Manager Documentation > Windchill Workgroup Manager Toolkit > Introduction > Toolkit API Limitations
  
Toolkit API Limitations
The following operations are not supported with the Windchill Workgroup Manager Toolkit APIs:
Creating or modifying primary content in documents that have an integration with Windchill Workgroup Manager
Receiving event notifications for actions performed through a web browser (either Windchill Workgroup Manager embedded browser or a standalone browser) such as checkin, upload, and checkout
Performing operations inside the authoring application – except for initial opening of a workspace document
Customizing the Windchill HTML user interface
Integrating Windchill Workgroup Manager with external applications