Web Service Proxy DC in NWDS 7.3

Hello,
We are planning to upgrade our SAP NetWeaver Portal platform from 7.0 to 7.3.
Currently, we have created following type of DCs in SAP NWDS 7.0: -
           1. Portal Application Standalone (packed in SDA) : ( mainly JSPDynpage & custom UWL connectors)
           2. Web Service Deployable Proxy DC  : (to be used in JSPDynpage to call web service)
Can anyone please suggest what type of DCs we need to create in NWDS 7.3 and some tips while migrating the code?
Please help.
Thanks & Regards,
Amey Mogare

Thank you very much Amey for the answer! I'm gonna try your approach and will get back to you if I have any confusion!
May I bother you with another question?
I'm facing a problem after deploying and starting EAR file (regarding to a Service) on
SAP NetWeaver Application Server Java. The error occurs when the service is started and the error  message indicates the soapconfig.xml because of a missing function (let's name it X). Just to make  sure weather the problem is caused by soapconfig.xml file or not, I did a test! The point is that when  I remove the folder containing soapconfig.xml and create EAR file, after deploying it, the same error  is issued meanwhile there is no soapconfig.xml file deployed!!
I would like to know what's your idea about this problem! Is there any configuration section in Sap  NWDS Application server Java in which we can change the path regarding to soapconfig.xml or any  other file??
Many thanks for your help in advance!

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    "oracle/wss_username_token_client_policy" });
    UtilGestionDocumentalPortType entidadDocPortType =
    utilGestionGrupos.getUtilGestionDocumentalSOAP12Port(/*securityFeatures*/);
    ((BindingProvider)entidadDocPortType).getRequestContext().put(BindingProvider.USERNAME_PROPERTY,"Username");
    ((BindingProvider)entidadDocPortType).getRequestContext().put(BindingProvider.PASSWORD_PROPERTY,"Password");
    ((BindingProvider)entidadDocPortType).getRequestContext().put(BindingProvider."EndPoint....." );
    I think I'm not using the correct system to create a jar for the WS, am I ?
    someone can help me with this ?

    Does any expert can help in deploying a web service proxy as a jar file ?

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