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306     PART II       Transaction Cycles and Business Processes

                         The Traditional Manufacturing Environment

                         The conversion cycle consists of both physical and information activities related to manufacturing prod-
                         ucts for sale. The context-level data flow diagram (DFD) in Figure 7-1 illustrates the central role of the
                         conversion cycle and its interactions with other business cycles. Production is triggered by customer
                         orders from the revenue cycle and/or by sales forecasts from marketing. These inputs are used to set a
                         production target and prepare a production plan, which drives production activities. Purchase requisitions
                         for the raw materials needed to meet production objectives are sent to the purchases procedures (expendi-
                         ture cycle), which prepares purchase orders for vendors. Labor used in production is transmitted to the
                         payroll system (expenditure cycle) for payroll processing. Manufacturing costs associated with intermedi-
                         ate work-in-process and finished goods (FG) are sent to the general ledger (GL) and financial reporting
                         system.
                           Depending on the type of product being manufactured, a company will employ one of the following
                         production methods:
                          1. Continuous processing creates a homogeneous product through a continuous series of standard pro-
                            cedures. Cement and petrochemicals are produced by this manufacturing method. Typically, under
                            this approach firms attempt to maintain finished-goods inventory at levels needed to meet expected
                            sales demand. The sales forecast in conjunction with information on current inventory levels triggers
                            this process.
                          2. Make-to-order processing involves the fabrication of discrete products in accordance with customer
                            specifications. This process is initiated by sales orders rather than depleted inventory levels.
                          3. Batch processing produces discrete groups (batches) of product. Each item in the batch is similar and
                            requires the same raw materials and operations. To justify the cost of setting up and retooling for



                           FI GU RE
                               7-1    CONVERSION CYCLE IN RELATION TO OTHER CYCLES




                                                              Marketing
                                                               System



                                                                  Sales
                                                                  Forecast


                                                                         Purchase Requisitions
                               Revenue Cycle   Sales Orders  Conversion
                                                               Cycle                          Expenditure
                                                                                                 Cycle
                                                                             Labor Usage

                                                        Work        Finished
                                                        In
                                                                    Goods
                                                        Process



                                                           General Ledger
                                                            and Financial
                                                          Reporting System
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