Preparing to debug
If you want to debug using source for XSLT include or import files on your workstation, and that source is not currently in a project then, before you can begin a debug session, create a workbench project and import the source for the include or import files into that project. This project must be specified in the Main tab of the launch configuration or as a source location (in the launch configuration Source tab or in the Edit Source Lookup Path dialog).
Related tasks
Using the XSL Transformation launch configuration
Locating source