1. A computer-implemented method for determining material flows of a product in a production environment, the method comprising: accessing requirement orders describing demanded quantities of the product and receipt orders describing planned available quantities of the product; classifying the requirement orders into priority classes which represent a priority of the requirement orders; classifying the receipt orders into feasibility classes which represent a likelihood of the receipt orders to be executable as planned; identifying a requirement order of a highest priority class having the requirement order; identifying a receipt order of the highest feasibility class which has the receipt order; and creating a pegging linkage between the identified requirement order and the identified receipt order, wherein the pegging linkage represents a material flow of the product from an origin quantity represented by the identified receipt order to a destination quantity represented by the identified requirement order.