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Manage BOMs > Restructure the MBOM

Replace parts and add or remove structure levels in an MBOM

In addition to letting you assign and remove parts using change management tools, Easy Plan lets you replace parts or manufacturing assemblies assigned to your manufacturing bill of materials (MBOM) or other target BOM, with other parts or assemblies independent of the engineering bill of materials (EBOM) or other source BOM. You can also add or remove structure levels to restructure MBOM parts and manufacturing assemblies.

Note

To avoid broken links in your work package bill of process (BOP), check BOP assignments after part replacement or restructuring.

After part replacement or restructuring, check the link for the consumed nodes in your work package bill of process (BOP).

Procedure

  1. Search for and open a work package and navigate to the BOM Alignment page.

  2. (Optional) Enable Show Assignment State if you want to visualize assignment statuses between the EBOM and MBOM.

  3. Do one or more of the following.

                                 To do this
                                 Do this
                             
                         
                             
                                 Replace a part or assembly in the MBOM
                                     with another part or assembly
                                 
                                     
                                         
                                         In the MBOM, select the part or
                                               assembly to be replaced and choose Edit Structure
                                                → Replace
                                               .
                                         In the
                                               Replace
                                               dialog box, do any of the following.
                                               
                                               From the Type list, select an
                                               object type and in the Name text box, type a unique name for
                                               the new part or assembly.
                                               
                                               
                                               Click the Palette tab and
                                               select the end item from the resulting Clipboard, Favorites, or
                                               Recent
                                               group.
                                               
                                               
                                               Click the Search tab to locate
                                               the item. 
                                               
                                               
                                               Click the Classification tab to
                                               select a classified object to add as a
                                               replacement.
                                               
                                             
                                         Click
                                               Replace.
                                         If Show Assignment State
                                               is enabled, at the prompt, do either of the
                                               following.
                                               
                                               To update changes to
                                               assignment indications in the MBOM, click
                                               Update
                                               Now.
                                               
                                               
                                               To ignore assignment tracking,
                                               click Switch Off
                                               Indications.
                                               
                                             
                                     
                                     In the MBOM panel, the original part or
                                         assembly is replaced. In the EBOM panel, which is independent of the
                                         MBOM, the original part or assembly is retained.
                                 
                             
                             
                                 Add existing MBOM parts to a new
                                     structure level
                                 
                                     
                                         In the MBOM,
                                               press the Ctrl and Shift keys to select the parts
                                               or assemblies that you want to add to a new
                                               structure level, and then choose Edit Structure
                                                → Insert Level
                                               .
                                         In the
                                               Insert
                                               Level dialog box, do one of the
                                               following.
                                               
                                               From the Type list, select an
                                               object type and in the Name text box, type a unique name for
                                               the new level.
                                               
                                               
                                               Click the Palette tab and
                                               select the end item from the resulting Clipboard, Favorites, or
                                               Recent
                                               group.
                                               
                                               
                                               Click the Search tab to locate
                                               the item. 
                                               
                                               
                                               Click the Classification tab to
                                               select a classified object to add as a new
                                               level.
                                               
                                             
                                         In the Insert Level dialog box, click
                                               Insert.In
                                               the MBOM, a new structure level is displayed. The
                                               parts you selected now become children of the new
                                               level.
                                     
                                 
                             
                             
                                 Remove a level from the MBOM but retain
                                     its contents
                                 
                                     
                                         
                                             In the MBOM, select the level
                                               structure to be removed, and choose Edit Structure
                                                → Remove Level
                                               .
                                             The level is removed but its
                                               child objects are now contained in its parent (one
                                               level up). The child objects of the selected
                                               occurrence are associated directly to the parent
                                               object of the selected occurrence.
                                         
                                     
                                     Note 
                                         If an assembly is assigned from EBOM
                                             to MBOM and the parts below this assembly are
                                             consumed in the BOP, you must reassign the parts
                                             following removal of this level in the MBOM.
                                     
                                 
                             
                             
                                 Remove a part or assembly level and all
                                     its child nodes from the MBOM
                                 
                                     
                                         
                                             In the MBOM, select the level
                                               structure to be removed, and choose Edit Structure
                                                → Remove
                                               .
                                             The level and all its contents
                                               are removed from the MBOM.
    
  4. Check the consumption of restructured parts assigned to the BOP.

Source: https://docs.sw.siemens.com/en-US/doc/282219420/PL20251212545240207.xid2214895/bat1714484204624 · retrieved 2026-07-11