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Engineering BOM Management – Usage > About engineering BOM management

Map engineering BOM with requirements

You can map an engineering BOM with requirements using trace links for impact analysis and quick navigation. This mapping helps you manage and trace evolving designs and requirements.A part is always created or added inside the structure due to a requirement. A requirement, as well as a part, can evolve over time. When either the requirement or the part changes, there might be an impact on some other requirement or a part.Example A ball bearing was designed for a load requirement of 100 kg, but now the load requirement has changed to support 200 kg. This results in a change to the part design of the bearing, and it can also impact other parts, such as the suspension spring. Therefore, it is important to have a mapping between the part and its corresponding requirements for impact analysis and quick navigation. You can create this mapping using trace links.When you work with Usage BOM, you have a part and the usage of that part in the product. Both the part and its part usage can have their own unique set of requirements. The part requirements are independent of the product where it is used, and the part usage requirement is only valid in the context of the product where it is used.Example The part tire is used in the Crosskart, and it has a tire requirement for a radial type of tire, independent of the tire location. However, when the tire is used as a front tire, it should have a pressure of 30 psi, and when used as a rear tire, it should have a pressure of 29 psi. This means the part usage of the front tire has a requirement of 30 psi and the rear tire has a requirement of 29 psi. You can create a trace link between the part tire and the requirement of the radial tire, making a revision to revision trace link.Then, you can create the part usage to revision trace links between the part usage of the front tire and the requirement of 30 psi, and between the part usage of the rear tire and the requirement of 29 psi.After creation, you can also view the existing trace links.

Source: https://docs.sw.siemens.com/documentation/external/PL20251212545240207/en-US/tc_help/ebom_usage/xid2215257.html · retrieved 2026-07-11