Reporting with Tivoli Common Reporting
As viewing BIRT reports in BIRT Report Viewer is not safe and is disabled by default, you can import the BIRT reports for TADDM into Tivoli® Common Reporting. It enables cross-product reporting that includes TADDM data. You can also use Tivoli Common Reporting features such as report scheduling, or use Tivoli Common Reporting as a central repository for reports.

You can use IBM Cognos Analytics 11 to import TADDM model and create custom reports. You can also import predefined TADDM reports-TADDMPackage.zip. For more details, see Reporting with IBM Cognos Analytics..
BIRT reports are not supported in IBM Cognos Analytics 11.
If you have TADDM 7.3 Fix Pack 1, or later, see also best practices guide The enhanced Cognos model in TADDM 7.3
FPx.