ManufacturingKnowledge

Manage BOMs > Assign parts to the MBOM > Add manufacturing specific components to MBOM

Reuse small MBOM manufacturing representations in a single MBOM

You can assign elements from more than one manufacturing bill of materials (MBOM) previously created from an engineering bill of materials (EBOM) to a single target manufacturing bill of materials (MBOM). Reusing previous work from these manufacturing representations, or "mini MBOMs," saves considerable planning time.

Procedure

  1. To allow reuse of existing manufacturing representations taken from a high-level product EBOM, set the value of the preference MBMEnableModularMBOM to true.

  2. Open a work package containing the source EBOM that is used in other mini MBOMs, as well as the preferred target MBOM, in the BOM Alignment page.

A column in the EBOM displays Has Manufacturing Representation icons to indicate EBOM source elements that are reused in external manufacturing representations, or mini-MBOMs. These manufacturing representations are available for reuse in your target MBOM. When you pause your mouse over the Has Manufacturing Representation icons, the number of representations available for reuse in your target MBOM is reported.

  1. To assign a manufacturing representation from the source EBOM to the target MBOM, select the appropriate line containing representation elements in the EBOM and the line below which it should be added to the MBOM, and in the MBOM toolbar, click Apply .

  2. At the prompt that appears displaying one or more manufacturing representation MBOMs, select the preferred representation and click Assign.

    Note When MBMUseEBOMAsIs = false and the selected EBOM node has only one manufacturing representation, the Manufacturing Representation dialog box is not displayed, and the single manufacturing representation is directly assigned to the MBOM.

The mini-MBOM assembly is assigned under the line you selected in the target MBOM. The Revision Name column reports the mini-MBOM manufacturing representation source, and copies that source's unique in context ID (IDIC) and source occurrence effectivity properties.

  1. Click the assignment icon on the line that contains the manufacturing representation in the EBOM to highlight the reused element in the target MBOM.

  2. To assign other manufacturing representations to the target MBOM, repeat steps 3-5 for each line containing manufacturing representations and each target MBOM line.

If multiple manufacturing representations are assigned to a single line, you can assign each instance to different target MBOM lines.

Source: https://docs.sw.siemens.com/en-US/doc/282219420/PL20251212545240207.xid2214895/xid1974256 · retrieved 2026-07-11