I have noticed that I can debug the DP class of the AX standard reports using the AX debugger running on my client machine. This is not something I can do with my own custom written reports. Also, I thought this code ran in CLR on the reporting server so should not be able to be debugged. So my question is what is the explanation for this, and is there any way I can utilize this capability for my custom written reports.
Please check whether your custom written classes extend SRSReportDataProviderBase, and those classes that you can debug extend SrsReportDataProviderPreProcess.