can some body explain me how the concept of retrospective pricing is handled in SAP .
Retrospective in purchasing mainly deals with Vendors.
Vendors may agree to refund a certain portion of the purchase price to purchasers in the wholesale/retail industry on condition that a certain quantity or value of goods is bought (incentive rebates), that payment is effected promptly, or that promotional activities are carried out, for example. End-of-period refunds of (retrospective discounts allowed on) part of the total spend with a certain vendor may also be payable as the vendoru2019s contribution towards disposal costs incurred by retailers and wholesalers (in connection with packaging, waste materials returned such as spent batteries, etc.). If a vendor agrees to enter into an such an arrangement with you, he is regarded in the SAP System as "granting conditions".
Conditions can be divided into two groups: those having immediate effect based on individual invoice dates, and those requiring "subsequent" settlement (retrospective settlement at the end of a certain period).
Goto help.sap.com and search for Retrospective, you can find any more useful information.