You use the Premium and Discount
set types (CRM_PROD_FS005) to define when you calculate the markdown for a payment or partial payment and credit it to the customer side.
When you maintain a financial service product (FS product), you select the required setting for premium/discount.
When you use the FS product in a business transaction, the system transfers the setting from the product master data.
You can change the setting in the business transaction as standard, and therefore adapt it to the specific customer, depending on the loan.