Cannot consume SAP WebService using Apache CXF

Question

I am trying to consume a WebService using Apache CXF, said WebService is a SOAP WebService published by some SAP software and secured by NetWeaver (or at least I assume that is the scenario, I am not 100% sure about that)

When I try to consume the web service using SoapUI, I can succesfully get an answer from the server. Username and Password are stored as properties of the request

The log of this exchange is pasted here: https://pastebin.com/c5V5rKEk ; I can see in that log that the request is made using POST method, and that it fails at first because is not authenticated, but then it sends Basic authentication and succeeds

HTTP/1.1 401 Unauthorized
server: SAP NetWeaver Application Server 7.49 / AS Java 7.40

Now, I am trying to consume the same service using classes created by apache cxf maven plugin (cxf-codegen-plugin). This is the code I have so far with these classes:

        JaxWsProxyFactoryBean factory = new JaxWsProxyFactoryBean();
        factory.setServiceClass(TablasSIOS.class);
        factory.setAddress("http://cvwqpo.kccl.cl:50000/dir/wsdl?p=sa/25dfc7b838943e78afee37d7eccd85f9");

        TablasSIOS operation = (TablasSIOS) factory.create();

        Client client = ClientProxy.getClient(operation);
        HTTPConduit http = (HTTPConduit) client.getConduit();

        AuthorizationPolicy authorizationPolicy  = new AuthorizationPolicy();
        authorizationPolicy.setUserName("username");
        authorizationPolicy.setPassword("password");
        http.setAuthorization(authorizationPolicy);

        TablasREQDT request = new TablasREQDT();
        request.setId("RA");
        request.setFiltro1("GERENTE");

        TablasRESDT response = operation.tablasSIOS(request);

When I execute this code, I always get this error message:

Exception in thread "main" javax.xml.ws.WebServiceException: Could not send Message.
    at org.apache.cxf.jaxws.JaxWsClientProxy.mapException(JaxWsClientProxy.java:183)
    at org.apache.cxf.jaxws.JaxWsClientProxy.invoke(JaxWsClientProxy.java:145)
    at com.sun.proxy.$Proxy46.tablasSIOS(Unknown Source)
    at cl.komatsu.consultamontocargo.WSTest.main(WSTest.java:52)
Caused by: org.apache.cxf.transport.http.HTTPException: HTTP response '405: Method Not Allowed' when communicating with http://cvwqpo.kccl.cl:50000/dir/wsdl?p=sa/25dfc7b838943e78afee37d7eccd85f9

Any help is greatly appreciated