Abstract: A method and a system of demand fulfillment associated with available to promise (ATP) and capable to promise (CTP) are provided. The system of demand fulfillment comprises a memory and a processor coupled each other. The memory can store a forecast order model representing a customer and a product. The product uses a product demand module comprising a forecast value representing a forecasted amount booked by the customer. An allocated value represents a planned supply amount and a support value represents a shared amount. A processor is operable to compute for the product and the ATP for the product according to the CTP and the forecast value. The ATP comprises the allocated value and the support value. The process can adjust the support value according to the CTP and at least a business criterion, and fulfill a request confirmation according to the allocated value and the support value. The method executed associated with the system could reduce the cycle time of order confirmation.

Abstract: A method of planning a production schedule by using a planning system, useful for a semiconductor foundry, is provided. When the sales order whose product needs to be subject to the backend process is entered, the planning system subtracts an available amount of the product in the warehouse from the demand of the sales order, and obtaining a balanced amount of the product which is still required. Then the system searches for the supplied amount of the product that can be provided from the foundry and the CTP capacity available for the backend process. The supplied amount is compared with the CTP capacity, and the smaller one is taken as the balanced amount of the product. The available amount of the product in the warehouse is added to the balanced amount of the product, obtaining a total amount of the product as the supply for the sales order.