To define the abstract elements by starting with the messages

1. Create or import an XML schema by using the Navigator window.

2. Create the messages that will be sent from one partner to another. Note that you can drag the schema elements or types from the Navigator window into the messages.

3. Create a partner link type. The partner link type contains a default role, which appears on the right. If you want to define a peer-to-peer interaction, then you must add a second role on the left.

4. Choose or create the port types and operations.

5. Assign the messages to the partner link type's operations.