Engineering BOM Management – Usage > Specify alternates and substitutes for parts
Set substitutes for a part in a structure
A substitute part is a part that can be used in place of another part in a specific product configuration. In other words, substitutes are specific to an assembly. A substitute part can be added in the context of an engineering BOM. You can set, remove, and replace parts with substitutes in a structure.
You can set a substitute for only those parts whose Assembly Indicator is not set as Generic Part and Configurable Assembly.
Procedure Select the part for which you want to set a substitute.
Click the Overview tab.
The substitutes available for a part are listed under the Substitutes section.
Add a substitute
Procedure In the Substitutes section, click Add Substitute .
In the Add Substitute panel, click one of the following tabs:
Tab
Description
New
On this tab, you can add a new occurrence.
Palette
On this tab, you can paste an occurrence from the clipboard or select one from your Favorites or Recent list.
Search
On this tab, you can search for an occurrence to add.
In the Add Substitute panel, select the part that you want to add as a substitute. You can select multiple parts.
Click Add.
The selected parts are added to the Substitutes list.
Remove a substitute
Procedure From the Substitutes list, select the substitute that you want to remove. You can select multiple substitutes.
Click Remove .
The selected parts are removed from the Substitutes list.
Replace an element with a substitute
Procedure From the Substitutes list, select the substitute that you want to use in place of an element.
Click Use .
In the structure, the element is replaced with the selected part. The element that is replaced in the structure is added to the Substitutes list.
Source: https://docs.sw.siemens.com/documentation/external/PL20251212545240207/en-US/tc_help/ebom_usage/xuf1737238792875/xid1504166.html · retrieved 2026-07-11