A Decision Model for the Order Sequence and Delivery Date Problem in Companies Manufacturing According to the Order

The orders received in the companies that manufacture according to the order are produced in the order of\rincoming demand. However, orders that cannot be produced on time or planned to be produced at a later date\rthan the customer’s demand cause customer loss. In this case, the company needs to decide which customer’s\rorder should be produced first. However, this decision can turn into a rather complicated problem due to\rdifferent criteria that need to be evaluated. In this study, an integrated decision model has been proposed for\rcompanies that make production on order, to establish a balance between the profitability of the company and\rthe satisfaction of customers, and to choose among indivisible orders within a limited time based on the\rmaximum benefit according to this established balance. The created model has been carried out on a\rcompany that produces to order. While determining how to choose between indivisible orders under a limited\rcapacity, the ability of heuristic optimization to produce fast and reasonable solutions is utilized. In the\restablished model, the production times and delivery dates of the orders are also determined. In the study,\rmulti-criteria decision-making methods are used to establish a balance between the profitability of the\rcompany and customer satisfaction. While the criteria and importance levels are determined by the Analytical\rHierarchy Process method, the customers are evaluated under the criteria with the TOPSIS method.\rAfterwards, a mathematical model has been established, and the selection process is carried out with a\rgenetic algorithm.