Managing part BOMs
Create and link a preliminary part BOM to a design BOM
Before you can align a part BOM with a design BOM, you must create a preliminary BOM and link it to the design BOM. A preliminary part BOM is essentially a part BOM with a structure that can be aligned with the design BOM but is more appropriate to the actual manufacturing process. Because some parts and subassemblies are made and some are outsourced, parts and subassemblies that exist in the part BOM can be defined as end items in the part BOM—single items that represent a combination of consumed end products, component parts, and/or materials that are not of interest in a manufacturing process.
Example
| You can create your part BOM structure to align a single part in the design BOM to another in the part BOM using either: A light alignment that aligns the part's BOM line properties and revision information but not a BOM view revision (BVR). Light alignments do not copy 3D geometry to the part BOM. A heavy alignment that generates an end item with a precise BVR and an occurrence revision. Heavy alignments copy 3D geometry to the part BOM. | ||
|---|---|---|
| A heavy alignment that generates a single end item that represents an outsourced subassembly of parts. | ||
| A light alignment that aligns several parts' BOM line properties. |
Procedure
- Ensure that no alignments have been created using the legacy Manufacturing Process Planner Tools→Structure Alignment options, and that the MEDesignToBOM_Enabled preference is set to true.
Note If you are using the Rollup_Variant_Feature preference, usually used to roll up variants on an EBOM to an MBOM, and you want the rolled-up variant conditions to be applied when you align a design BOM to a part BOM, add the bl_condition_tag property to the MEAlignedPropertiesList preference.
Open the design BOM for which you want to create a part BOM.
With no lines in the design BOM selected, choose File→New→Part.
Note If 4th Generation Product Master is installed with Teamcenter on a 64-bit Linux server, you can only create legacy part objects (File→New→Legacy Part).
In the New Part dialog box, click Next.
In the Part Information section, type an ID/revision or click Assign, type a name for your part BOM, and click Finish.
A new BOM opens with the top line defined. By default, when you create a part, its Design Required attribute is set to True. To align with the design BOM, all parts must have this attribute set to True.
- With the top line selected, add additional parts or assemblies to match the design BOM structure as needed.
In this example, note that all of the CAM BOM hex head bolts share the same ID, qp007588, indicating that they are reusable instances of one design. In cases like this, the part in the part BOM is copied and pasted rather than created so that all hex bolts in the part BOM retain a single ID, qp008378. You could also locate an existing part in Teamcenter that was created for a previous product using the Attachments pane.
- Right-click the top line of the part BOM and choose Link/Associate→Link Part to Design Top Line.
If you later want to verify which design BOM is linked to a part BOM or vice versa, you can open the linked BOM using the Linked to Product find command.
Select the top line of the part BOM and in the Link Part to Design Top Line dialog box, click Set/Add current selection .
Click OK and in the resulting confirmation, click OK again.
The two structures are linked, and you are ready to align their components.
Related Topics
- Part BOM requirements
Source: https://docs.sw.siemens.com/en-US/doc/282219420/PL20251212545240207.xid1364469/xid1303620 · retrieved 2026-07-11