The Fulfill relationship is a PTC proprietary relationship that is available only when the MBRE Profile has been added to a model.
You can create Fulfill relationships on an MBRE Traceability Diagram or through a Modeler pane:
• On an MBRE Traceability Diagram you can create a Fulfill relationship only from an Activity, Actor, Block, Class or Use Case to a Use Case.
• Through a Modeler pane you can create a Fulfill relationship from any item to a Use Case.
When you add a Fulfill relationship to an item, Modeler applies the «UseCaseRelated» stereotype to that item. On the UseCaseRelated tab of the item's Property Pages, the fulfilledBy and fulfills tag definitions show how that item is linked to other items through Fulfill relationships.
To create a fulfill relationship on an MBRE traceability diagram: