You signed in with another tab or window. Reload to refresh your session.You signed out in another tab or window. Reload to refresh your session.You switched accounts on another tab or window. Reload to refresh your session.Dismiss alert
An extension relationship must reference at least one Extension Point.
Details
An Extension Point is a feature of a Use Case that identifies a point where the behaviour of a Use Case can be augmented with elements of another (extending) Use Case. Therefore, an extension relationship should reference an Extension Point of the Use Case it extends.
Tips
Add an Extension Point to the Use Case you want to extend if none already exist, and/or reference that Extension Point in the extension relationship properties.