Companies design costing methods to support three processes:
The system supports you in developing, using, and optimizing costing conventions appropriate for your particular business and product lines.
CAUTION: The decisions that you make in setting up your costing methods affect calculations throughout Inventory, Material Planning, Production, and Financials. We strongly recommend you set up your costing methods before processing any manufacturing transactions.
Because the system costing methods are set at the item level, you can use a variety of combinations of cost flow methods in order to manage different items in different ways. For example, you could use:
About the Average Costing Method
About the Specific Costing Method
How LIFO/FIFO Stacks Function When Using Item/Warehouse Costing