For instance, many companies operate with one single MRP process. Consider that company that manufactures in a make-to-stock (MTS) mode, whose executives feel that this single MTS enterprise system is adequate for their needs. This attitude is fine—if a manufacturer has a stable, predictable demand for all of its products. But in reality, few manufacturers have the luxury of flat demand. More often the rule of Pareto is applicable. This rule suggests that 20 percent of products have a stable demand, and you can manufacture them efficiently in large quantities. But the other 80 percent of a manufacturers' part numbers are ordered less frequently, and therefore need to be treated differently in the company's processes, systems, and scheduling. This is why virtually any MTS manufacturer should run in multiple manufacturing modes. Most MTS manufacturers would gain from a parallel make-to-order (MTO) system. This will avoid the stockpiling of a large number of items that are more effectively handled in MTO mode, freeing up both capital and production capacity for other products, all without sacrificing responsiveness or customer service. By continually analyzing demand patterns and inventory turns, the point of postponement can be changed over time to achieve the optimal balance between efficiency and responsiveness.
A modern, agile enterprise application will include all of the necessary tools to handle these multiple modes. Apart from ensuring that they have the proper enabling technology, manufacturers will need to carefully analyze the demand patterns for their finished goods and divide them into MTS and MTO.
Figure 2. Demand Planning—Minimize the forecast error and improve customer service without sacrificing inventory turns.
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