Related objects define the main object in some way so that when these relationships are created or updated, users who have subscribed to the main object are notified. This is achieved by setting the ownership flag on the relationship so that SmartPlant Foundation sets the last updated date on the owner when the relationships are changed.
For example, Tags related to document revisions: SPFRevisionPlantItem
Use cases
The document revision needs to be updated when the tags are added or removed.
Relationship configuration
The plant items related to the document revision describe the contents of the document. If these relationships are changed, the Owner12 property is set to True in the document.