Updating Registered Web Service
To update a registered web service (for example, when the WSDL file has been modified or if you want to change the registry package that contains the web service), call the register() method with the modified WSDL file.
Note:
The key associated with a registered service comprises its organization, its name, and the WSDL file's targetNamespace. If you modify one or more of these, the service is not updated, however, a new registry entry is created.