Creating manufacturing BOMs > Working with occurrence groups
Introduction to occurrence groups
Occurrence groups help you scope data from a very large structure to a more manageable structure that contains only those objects that you currently need for your work. If you have a very large structure, for example, you can create subsets of this structure in occurrence groups that are tailored to the needs of different departments.
An occurrence group structure is attached to the main structure (the base view) and can only hold occurrences from that structure. An occurrence under an occurrence group is the same occurrence as in the main structure. Making changes in the occurrence group structure is the same as making these changes in the main structure. You can think of an occurrence group as holding shortcuts to the occurrences in the main structure. You can have multiple shortcuts to the same occurrence, that is, you can assign the same occurrence to multiple occurrence groups. You can create multiple occurrence group structures, each one holding a different list of occurrence groups and a different list of occurrences from the main structure.
Note
You can create incremental change information about occurrence groups and their content (children). However, configuring the view to show or hide configured changes does not work for this information. Only incremental change information that is common with the base view (in the item structure) is filtered.
Source: https://docs.sw.siemens.com/en-US/doc/282219420/PL20251212545240207.mse/id686129 · retrieved 2026-07-11