Hi,
In order to change the targetNamespace value of the SOAP web services, I would do the following steps:
* Enter the URL of the WSDL file in the browser as below:
```
http://<vdp_server_host>:port/server/<database>/<ws_name>/services/<ws_name>.wsdl
```
* Modify all the instance of the targetNamespace value to the desired namespace.
* Refresh the client application that is using the newly modified WSDL file to get the changes reflected.
Hope this helps!!