Manage BOMs > Assign parts to the MBOM
Understanding domain subassemblies
A domain is a previously defined scope created when you align separate MBOM subassemblies to a portion of an EBOM. Assignment domain relations, which are like an accountability check that lets you limit the scope of areas compared, might include:
| (1) | An EBOM assembly that is assigned one-to-one to an MBOM assembly. | |
|---|---|---|
| (2) | Two or more EBOM assemblies that are assigned to a single MBOM assembly. | |
| (3) | An EBOM assembly with assignments distributed across two or more MBOM assemblies. |
To define domain subassemblies, you must:
Set the value of the preference MBMEnableBOMFiltering to true.
Set the preference MBMEnableBOMFilteringDesc to true. This preference performs alignments between subsections of the EBOM and MBOM by showing only relevant nodes based on a relation.
(Optional) Add item types to the preference MBMAssignmentDomainMBOMTypes. This preference specifies which item types in the MBOM structure can be used to define an assignment domain relation. Default values include an empty input format, ItemRevision, CustomPartRevision, and others.
Source: https://docs.sw.siemens.com/en-US/doc/282219420/PL20251212545240207.xid2214895/xid2011102 · retrieved 2026-07-11