In Sales Order Control (7.1.24), the QMI planner has set up rules for forecast consumption. In this example, whenever sales exceed forecast in a period, the system consumes the forecast, first by going back, then forward one period from the original forecast in the period the sales order is due. The system then continues to search backward and forward until the specified number of previous periods (2) and future periods (1) have been examined, or the entire sales order quantity has been applied.