ManufacturingKnowledge

Manage BOMs

Match EBOM and MBOM table properties

Provided that an administrator has set preferences to do so, you can carry over certain properties from the engineering bill of materials (EBOM) to the manufacturing bill of materials (MBOM) when assigning elements so that they display as columns in both structures when you make or change assignments. Preferences in the Teamcenter rich client related to property carry overs include:

  • MEEffectivityAssigmentMode, which defines the assignment behavior from EBOM to MBOM for the BOM line property bl_occ_effectivity. The value of this preference must be set to
  • MEAlignedPropertiesList, which specifies the supported BOM line properties for alignment initialization, out-of-synch detection, and synchronization. The value of this preference must be set to bl_occ_effectivity.

When you perform the following procedure, you see how column properties set using the preferences described above affect both the EBOM element and any MBOM elements assigned to the MBOM.

Procedure

  1. Open a Manufacturing-BOM Manager work package.

  2. In the EBOM, select an unassigned assembly with either a specific revision level or a specific occurrence effectivity (a date range or range of units for which the assembly is valid for manufacturing, such as units 1 to 199).

Tip You can select multiple parts and assemblies as long as they reflect the MBOM parts and assemblies to which you will assign them.

  1. In the MBOM, select the assembly where the unassigned assembly will be assigned, and in the EBOM toolbar, click Assign Parts Selected in EBOM .

The number of elements assigned to the MBOM assembly is reported. If the EBOM assembly and parts are the same as those in the MBOM, the EBOM assembly and parts display the full match icon and the revision and occurrence effectivity columns are carried over. In the image below, an engineering user has changed the EBOM by for example, removing a part from the EBOM assembly and saving it as a new revision. The EBOM displays a property mismatch icon next to the full match icon. The property mismatch icon also appears in the MBOM because the EBOM has a B revision while the MBOM has an A revision. The part removed by the engineer user from the EBOM also displays a missing in EBOM icon in the MBOM.

  1. Select the part showing a missing-in-EBOM icon in the MBOM, and in the MBOM toolbar, click Remove .

The part is removed from the MBOM.

Source: https://docs.sw.siemens.com/en-US/doc/282219420/PL20251212545240207.xid2214895/xid1852895 · retrieved 2026-07-11