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34       CHAPTER 2  Introduction to Enterprise Systems




























































               Figure 2-9: GBI product structure



                                             •  Raw materials (ROH) are purchased from an external source—a
                                                vendor—and used in the production process. Typically, raw materi-
                                                als are not sold to end-customers. Consequently, the material mas-
                                                ter will contain data related to procurement and production but not
                                                fulfi llment. Examples of raw materials utilized by GBI are frames,
                                                wheels, tires, and tubes.
                                             •  Semifinished goods (HALB) are typically produced in-house from
                                                other materials (e.g., raw materials) and are used in the production
                                                of a fi nished good. Consequently, data related to production must
                                                be maintained for semifi nished goods. Front wheel assemblies are





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