Combining Strategies 10 and 30 
Prerequisites
You might want to create a new strategy group that combines the strategies
Net Requirements Planning (10) and Production by Lot Size (30). This can be useful in the following situations:
Procedure
To set up this strategy, proceed as follows:
Result
You can now sell this material either way.
You can change the requirements type by selecting the Procurement type tab title in the sales order menu.