Creating a Service Interface diagram
With HOPEX Business Process Analysis, a service interface is represented by a service interface diagram.
To create a service interface diagram:
1. Open the Characteristics property page of the composite conversation of your choice.
2. From the Service operation field, you can access the connected service operation and its properties.
3. From the Diagram page of the service interface, click Create a diagram.
4. Select Structured diagram.
The diagram opens. The frame of the service interface is positioned and the two roles (sender and recipient) are created. Used operations and service interfaces are also positioned in the diagram.
Defining used operations and service interfaces
In a service interface diagram (BPMN), operations are described by:
• used service operations
• used service interfaces
A service operation use represents the usage of a service operation in an service interface.A service interface use is associated to a service interface. It enables representation of complex exchanges.To create a used service interface:
1. Select the Service Operation Use button 
and click in the diagram within the exchange contract frame.
and click in the diagram within the exchange contract frame.The creation dialog box opens.
2. Click the arrow at the right of the Specification box.
3. Select List in the drop-down list and select the service interface connected to the service interface used.
4. In the From field, select the described service operation role connected to the Invoker role of the service interface used.
5. In the To field, select the service operation role connected to the Invoked role of the service operation used.
6. Click Finish.