ManufacturingKnowledge

Managing EBOMs-MBOMs

Realign lines in MBOM and EBOM structures

If an accountability check reports that lines in your MBOM are no longer linked to lines in the EBOM from which it derives, in many cases, you can fix the problem by aligning their properties so that the accountability check reports a full match. If parts have moved in either structure, this action also realigns their transformations.

Procedure

  1. If the EBOM and MBOM are not already linked, link them using the Link Associate→Link Structures command.

  2. (Optional) If you are viewing unconfigured structures, turn them off so that you have 100% BOMs by deselecting the Show Unconfigured toggles.

While you can run the alignment without fully configuring the structures, not all lines may be aligned.

  1. Run an advanced accountability check, and from the advanced accountability result view, search result view, or BOM view, press Ctrl and select each line to be realigned.

  2. Choose Tools→Manufacturing Alignment→Align Selected Lines.

In the Search Equivalent Lines dialog box, the lines you selected appear in the Lines to search for list.

  1. In the EBOM, select the top line, and in the Search Equivalent Lines dialog box, next to the Scope to search in box, click .

In the Align Selected Lines dialog box, lines found in the EBOM are displayed in the Source column next to the lines you searched in the MBOM Target column.

Tip To avoid scrolling, your administrator can control the number of lines to appear at one time in this list using the MEAlignmentNumberToSearch site preference (default = 15). You can then click Previous and Next to cycle through the line sets.

  1. Click in the list of source/target lines, and in the Properties Comparison group, review similarities and differences between source and target.

As you select the lines in the list, they are highlighted in the EBOM and MBOM.

  1. After you determine which lines should be aligned, select the lines to be aligned.

Tip To deselect or select all lines, click or .

  1. To align all properties in the MEAlignedPropertiesList site preference, select the Align properties for the repaired lines check box.

  2. Click Align.

Aligned lines are indicated in the Handled column.

  1. Run an accountability check to verify that the structures are aligned.

Source: https://docs.sw.siemens.com/en-US/doc/282219420/PL20251212545240207.xid1364469/xid1116811 · retrieved 2026-07-11