- Modeled state elements as "serviceData elements"
- SDE is an extension and restriction of XSD:element
- SDEs are declared within a WSDL interface
<gwsdl:portType name="NCName"> *
<wsdl:documentation .... /> ?
<wsdl:operation name="NCName"> *
...
<sd:serviceData name="NCName" ... /> *
<sd:staticServiceDataValues>?
<some element>*
</sd:staticServiceDataValues>
...
</gwsdl:portType>