MRP for special stock "B" Customer Stock

Hello

I have a question on running MRP. Scenario is as below:

- Goods receipt stock into special stock B Customer Stock

- Plant has reorder points maintained

- When running MRP for this material/plant (txn MD03), MRP ignores the customer stock

Is it possible to have MRP take into consideration this customer stock? or do we need to use customer stock "B" combined with project stock to make it work?

Thanks for help in advance