Amit,
you may check below items for example:
Cost Center Reports
Profitability Analysis - consolidation
Drawback cost calculation
Stock valuation on Commercial
Cost object time confirmations
Fixed and Variable cost
Materials used in production but not in BOM
Distribution channels
Buy for reasale
Promotions scenarios
Production orders on commercial
Keep in your mind each SAP installations have particulaties and you have to check it with your key user.
regards