If you want to set debug for How to debug AX 2009 SSRS reports with Microsoft Visual Studio 2008 then this link is very helpful to know debugging SSRS reports http://kdynamics.blogspot.in/2013/04/debugging-microsoft-dynamics-ax-2009.html You need to use Visual Studio 2008 integrated debugger and reporting tools,extensions,services, vs 2008 should be installed on your pc with ax client.
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