Creating a Service Interface from a Composite Conversation
You can create a new service interface from a composite conversation.
To create a service interface from a composite conversation:
1. In the diagram insert toolbar, click the
Composite Conversation 
button.
2. Draw a link between the two communication entities.
3. In the creation window, click the arrow at the right of the field Service interface and select Create a service interface.
The creation window appears.
4. Select the Creation Mode. Standard Creation.
5. Enter the service interface name in the Name field.
6. Click OK.
The composite conversation and the service interface are created.