Configurable material planning strategy

Hi everyone:

I’m working with a configurable material, I’m using 25 planning strategy for my configurable product and 70 planning strategy for the possible components for the product, after I create the sales order, I run MRP to get the planned orders for the product and components then I convert the planned orders, as a result, a production order is created to get de finished product for that sales order, I’m agree with this but for components, system askme to have a stock (if I don’t have it, system ask me to purchase it) for that sales order and client in specific and what I want is to have the components in a common stock and take them for the production order created for the sales order in specific.

Do I need to use other planning strategy?, I also tried with 89 (FG) – 70 (Components) planning strategy and I have the same problem.

Thanks for helping me!!

Regards!!

JC