Items not deducted during production process

Summary:

Items not deducted during the production process

Content (required):

I have done a manufacturing setup and created the following structure. Mountain Bike (Finished Product) made of 2 sub-assemblies namely "Bike Frame" and "Tire Kit".

I have created 3 work definitions for Frame, Tire kit, and Bike. When I create Bike Frame and Tire Kit, raw materials do not reduce from inventory. However, when I create the mountain bike, the quantity was reduced from the onhand quantity of the Bike Frame and Tire kit.

Any idea, for the reason for not reducing item quantities of raw materials?

The finished good template has been used during item creation for items Mountain Bike, CS_RM1/2/3/4