Specified XMLAdapter not found

While using EntireX for communicating with Natural I have the following Exception:

Jul 06, 2015 9:54:59 AM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Allocate exception for servlet EntireXXMLServlet
javax.servlet.ServletException: 2000 0028 Specified XMLAdapter not found. ( adapter Ias230n1XmlAdapter )
at com.softwareag.entirex.xml.rt.XMLServlet.init(Unknown Source)
at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1284)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1197)
at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:864)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:134)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:423)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1079)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:620)
at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2476)
at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2465)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
java.io.IOException: Server returned HTTP response code: 500 for URL: http://localhost:8080/Webservices/soapinxml

at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1838)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1439)
at utilities.WebServiceDataCall.getData(WebServiceDataCall.java:130)
at personnel.employee.IAP285N1b.updateTraining(IAP285N1b.java:123)
at personnel.employee.EmployeeTrainingServlet.doPost(EmployeeTrainingServlet.java:200)
at personnel.employee.EmployeeTrainingServlet.doGet(EmployeeTrainingServlet.java:39)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:624)

My questions are:
1.What it is wrong
2.How can be fixed
3.Is the missing XMLAdapter supposed to be generated

The Code that Throws Exception is here:

/**
* Transports the data to/from the XML/soap server
*
* @throws java.net.ConnectException
* @throws javax.xml.bind.JAXBException
* @throws java.net.MalformedURLException
* @throws java.io.IOException
*/
public void getData() throws java.net.ConnectException, JAXBException,
MalformedURLException, IOException {

    m = context.createMarshaller();
    m.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, Boolean.TRUE);

    URL url = new URL(webServiceUrl);
    HttpURLConnection con = (HttpURLConnection) url.openConnection();
    con.setDoOutput(true);
    con.setDoInput(true);
    con.setRequestMethod("POST");
    con.setRequestProperty("content-type", "text/xml");
    con.setRequestProperty("Accept", "text/xml");

    OutputStream out = con.getOutputStream();
    OutputStreamWriter wout = new OutputStreamWriter(out, "iso-8859-1");
    m.marshal(inElement, wout);
    wout.flush();

    Unmarshaller u = context.createUnmarshaller();
    outElement = (Element) u.unmarshal(new StreamSource(con
            .getInputStream()));
    out.close();
    con.disconnect();

}

And the instruction that throws Exception is this:
outElement = (Element) u.unmarshal(new StreamSource(con
.getInputStream()));

What version of EntireX are you using?

I think I have version 8.2.

Thank you for response.
In licence I have
EntireX
8.2.
So it is EntireX 8.2

More precisely we are running EXX 8.2.2.47

You get this error because the EntireX XML servlet tries to load the adapter class Ias230n1XmlAdapter, but it is not found in the classpath.

You must have a version 7 EntireX XML runtime, because the XMLAdapter support has been removed with EntireX 8.0.

Thank you for your response.
I added the Adapter to the classpath and now I am getting another exception:
java.io.IOException: Server returned HTTP response code: 400 for URL: http://localhost:8080/Webservices/soapinxml
at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1838)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1439)
at utilities.WebServiceDataCall.getData(WebServiceDataCall.java:130)
at personnel.employee.IAP285N1b.updateTraining(IAP285N1b.java:123)
at personnel.employee.EmployeeTrainingServlet.doPost(EmployeeTrainingServlet.java:200)
at personnel.employee.EmployeeTrainingServlet.doGet(EmployeeTrainingServlet.java:39)

Where I can find a good tutorial about EntireX 7 ?

Take a look at the version 7.x EntireX documentation. You probably need to ask support to get access to this documentation set.