Original Equipment Manufacturers (OEMs) must ensure that suppliers who support them are instructed specifically on what to supply and when. In addition, the high volume of transactions associated with producing, for example 30 units per hour, 24 hours per day, lends itself to a mechanism for automatically handling the data transactions that mirror this process. The compulsion for using EDI is for both transactional efficiency and control of manufacturing. The make-to-order process can only be made practical using EDI. To ensure the effectiveness of a closed loop system between OEM and supplier, it is essential that EDI is implemented and integrated.