The requirements class is selected through the requirements type.
You can select the requirements type in different ways:
The item category is determined through the item category group in the sales and distribution view of the material master record, and through the order type of the sales document (inquiry, quotation, or sales order).
The Source field under Check Control of Requirements Type Determination in Customizing for Product Cost Controlling determines what method is used. You have the following options:
The MRP group or the strategy group in the MRP view of the material master record determines what requirements type is used.
If you have not specified this information, the requirements type will be selected through the item category of the sales order item and the MRP type in the MRP view of the material master record.
If you have maintained both an MRP group and a strategy group, the system uses the strategy group (precedence to strategy group).
You can enter the strategy group directly in the MRP view. If you have specified a strategy group, you do not need to enter an MRP group.
The item category is derived from the item category group in the Sales view of the material master record and from the order type of the sales document. Together with the MRP type in the MRP view of the material master record, the item category determines what requirements type is selected. The MRP group in the material master record is irrelevant here.
The advantage of this method is that the selection of the requirements type depends on the business process (such as quotation, sales order, or repair).
Example for source indicator 0: Strategy for material master
The MRP group is 0020 (sales-order-related production).
The MRP group points to the strategy group 20 (sales-order-related production), which combines a range of planning strategies such as main strategy 20 (sales-order-related production), alternative 21 (sales-order-related production/project settlement).
The strategy specifies a requirements type for the customer independent requirements (such as sales-order-related production without charging). The requirements type specifies a requirements class containing default values for the calculation of overhead, for results analysis, and for settlement.
The requirements class determines the account assignment category of the sales order item. You use the account assignment category to control whether costs can be collected on the sales order item.
Example for Source indicator option 1: Item category and MRP type
In the Sales view of the material master record, you have entered the item category group NORM (normal item).
The system specifies the requirements type in the sales order.
For more information on the control of requirements type determination, see the IMG for Product Cost Controlling under Cost Object Controlling® Product Cost by Sales Order ® Control of Make-to-Order Production ® Check Control of Requirements Type Determination.