Hi Karthik
What is your activity quantity? This value of activity may be a calculation result (activity price i.e. 9/- x Activity quantity in FG).
Also if in BOM of FG you have some SFG included, and this activity is also involved in SFGs then this value may be a result of cost roll up. Means total activity cost of all SFGs included in BOM and also add the activity cost for FG then verify whether this figure matches?
Kindly let us know the results.
Regards
Rajneesh