Hi Uday,
You can mask your customer config and attach screen shots of config to us.
We can tell you what's wrong in it ASAP after seeing screenshots.
Quick Question:
Do you have SAP EM consultant with you or you can request your project or project manager get some part time or seasonal SAP EM consultant to fix this. if client don't fix this then reporting not accurate or enormous data with duplicate records reside in system.
Regards
GGOPII