To change an abstraction's name, select the abstraction shape in the diagram and:
The Change Abstraction dialog will be opened.
Change the Abstraction's name as required. It can be up to 20 characters in length of mixed case, and must be unique within the model.
Click the OK button to change the abstraction. Its shape will be updated with its new name on the model diagram.
If you do not wish to change the abstraction, press the Cancel button.