The MRP method has been a widely used production planning method since the 1950s. However, the world has changed dramatically since then and customers today expect fast delivery of highly individualized products. The classic MRP generates production plans that cannot be implemented in this way in reality, because the availability of machines, personnel, production resources, etc. is not taken into account when scheduling planned orders and production orders. As a result, scheduling statements to customers on an MRP basis are very doubtful. Intelligent planning methods can be used to create production plans that take these circumstances into account. The orders are planned in such a way that the machine capacity, personnel capacity, production resources and other limiting resources are available for processing the order and not only the demand is covered. Thus, the calculated dates for planned and production orders are feasible in reality. The planner is relieved of routine work and can focus on exception handling.