A portType is defined as a set of abstract “operations” that involves messages. The operations are nothing but the transportation primitives that a network-end point can support, such as a “Request-Response”.
Fig 7: Relationship between portType and message.
The relationship between portType and message is shown pictorially in Fig 7. There are three differentportTypes defined in the SAS Web Service WSDL document and each portType represents an operationmessage combination for different protocols. So a portType = operation + messages