| A | Simplification of the Bill of Material (BOM) structures and processing will dramatically reduces errors, inconsistencies cost and time related to BOM definition and use. Where possible, establishing a single, logical master BOM definition is considered a best practice. Note that having a single, logical master BOM does not mean that every user sees the BOM in the same way. Multiple views of the BOM can be created for different users or groups, e.g., engineering BOM (EBOM), manufacturing BOM (MBOM), service BOM, marketing BOM, etc. There may be multiple versions of the MBOM based on individual production facilities and locations. The reason for having multiple views of the BOM is that different groups have different needs and uses of the BOM. Engineering normally uses an exploded, top-down view of the parts and assemblies contained within the BOM regardless of how they would be assembled in production. However, manufacturing generally needs to view it in another manner, i.e., show made on assembly or phantom parts, include adhesives and manufacturing consumables, etc. that reflect the actual manufacturing processes. Having both EBOMs and MBOMs (preferably different views taken from a single master definition) enables each user group to work with the BOM in the manner which best addresses their needs and processes. It is important to fully understand the types of products being designed, manufactured and supported and the organizations and processes that will be used as part of engineering and manufacturing to best determine the most effective approach to BOM management for a specific company or organization -- no one size or approach fits all. Where multiple BOMs will be maintained, it is critical the clear definition of the master BOM be established and that all changes to BOMs be integrated with and consistent with the master definition. In the world of BOM management, the fewer the better. |