Distribution requirements planning: A generalized system for delivery scheduling in a multi-sourcing logistics system

Distribution requirements planning (DRP) is one of the scheduling methods used in logistics systems, A generalised version is presented of a DRP system designed to enhance scheduling flexibility of currently used DRP systems and to deal with multi-sourcing trans-shipment problems in a multi-echelon logistics system. The required information inputs, capabilities and advantages of this generalised DRP system are described in detail. Finally, the future research direction to improve the adaptability of DRP in distribution systems is discussed.