To diagnose rule issues, you can utilize the Cognos TM1 Rules Tracer. The Rules Tracer will allow you to:
Trace feeders, to ensure that selected leaf cells are feeding rules-calculated cells properly
Check feeders, to ensure that the children of a selected consolidated cell are fed properly as well as verifying that the calculation paths of the selected cells are correct
A practical example for using the Rules Tracer is in the event that you notice a rules-calculated consolidation is not calculating correctly. In this case, you would first review the consolidation's children to ensure that they are being fed properly. The easiest way to do this is to utilize the Check Feeders feature of the Rules Tracer.