Thank you for reading my problem.
After I deleted one element: <element name="contractorPWCR" nillable="true" type="xsd:string"/> from the wsdl file, refactoring the wsdl, created new request, the result still have contractorPWCR.
I also added attribute but not in the result.
Thanks,
Jim
C:\Web-Service-related-moxy\To-down\codes\xsd\API-Ready-Refactoring-Not-Work.doc