Could not parse XMBMessage due to Can't parse the document

Question

*Dear all,*
*i have a SOAP to RFC Scenario. XML Validation by Adapter is turned on in SenderAgreement.*
*XSD Files are placed in the correct directory. Incoming requests are validated. However,*
*it seems that responses produce an error in the soap adapter.*
*This is the error message i am getting:*
+SOAP:Fault>+
         +<faultcode>SOAP:Server</faultcode>+
         +<faultstring>Server Error</faultstring>+
         +<detail>+
            +<s:SystemError xmlns:s="http://sap.com/xi/WebService/xi2.0">+
               +<context>XIAdapter</context>+
               +<code>ADAPTER.JAVA_EXCEPTION</code>+
               +<text>com.sap.engine.interfaces.messaging.api.exception.MessagingException: com.sap.engine.interfaces.messaging.api.exception.MessagingException: Could not parse XMBMessage due to Can't parse the document+
+     at com.sap.aii.adapter.soap.ejb.XISOAPAdapterBean.process(XISOAPAdapterBean.java:1173)+
+     at sun.reflect.GeneratedMethodAccessor678.invoke(Unknown Source)+
+     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)+
+     at java.lang.reflect.Method.invoke(Method.java:592)....+
*In SXMB_MONI my response includes the following passages*
+- <!--  ************************************+
  -->
  +<Trace level="3" type="T">Pipeline Service = PLSRV_XML_VALIDATION_RS_OUT</Trace>+
  +<Trace level="3" type="T">Skip Inbound Validation =</Trace>+
  +<Trace level="3" type="T">Skip Outbound Validation =</Trace>+
  +<Trace level="3" type="T">Area = XML_VALIDATION_OUT</Trace>+
  +<Trace level="1" type="T">Reading sender agreement</Trace>+
  +<Trace level="3" type="T">Validation Mode = Validation by Adapter</Trace>+
  +<Trace level="1" type="T">Outbound validation of response takes place</Trace>+
  +<Trace level="3" type="T">Interface Name = SI_xxx_xxx_xxx_Sync_Outbound</Trace>+
  +<Trace level="3" type="T">Interface Namespace = http://xxx.de/xxx</Trace>+
  +<Trace level="3" type="T">Software Component Version = D390B9E10A6B11DF8C15C7540A484C06</Trace>+
  +<Trace level="2" type="T">Java Validation Service Call</Trace>+
  +<Trace level="1" type="T">System error occurred during XML validation</Trace>+
  +<Trace level="1" type="E">CL_XMS_PLSRV_VALIDATION~ENTER_PLSRV</Trace>+
  +</Trace>+
  +<Trace level="1" type="B" name="CL_XMS_MAIN-WRITE_MESSAGE_TO_PERSIST" />+
+- <!--  ************************************+
  -->
  +<Trace level="3" type="T">Persisting message Status = 023</Trace>+
  +<Trace level="3" type="T">Message version 009</Trace>+
  +<Trace level="3" type="T">Pipeline CENTRAL</Trace>+
  +</SAP:Trace>+
*I see the following error message:*
  +<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>+
+- <!--  Aufruf eines Adapters+
  -->
- <SAP:Error SOAP:mustUnderstand="1" xmlns:SAP="http://sap.com/xi/XI/Message/30" xmlns:SOAP="http://schemas.xmlsoap.org/soap/envelope/">
  <SAP:Category>XIServer</SAP:Category>
  <SAP:Code area="XML_VALIDATION_OUT">CX_XMS_SYSERR_VALIDATION</SAP:Code>
  <SAP:P1>Schema xxx.response.xsd not found in J:\usr\sap\xxx\SYS\global\xi\runtime_server\validation\schema\00000000000000000000000000000000\ u00D3u00B9u00E1 k u00DFŒ u00C7T HL \SI_xxx_xxx_xxx_Sync_Outbound\urnsap-comdocumentsaprfc~functions\xxx.response.xsd (J:\usr\sap\xxx\SYS\global\xi\runtime_server\validation\schema)</SAP:P1>
  <SAP:P2 />
  <SAP:P3 />
  <SAP:P4 />
  <SAP:AdditionalText>not used at the moment.</SAP:AdditionalText>
  <SAP:Stack>System error occurred during XML validation</SAP:Stack>
  <SAP:Retry>M</SAP:Retry>
  </SAP:Error>
There seems to be an error in the adapter trying to validate the response. Does anyone has a clue as to why ?

Answer 1

Since i cannot get i running, i helped myself using a java mapping, that i packaged into a jar
along with the xsd files. See code below:
import com.sap.aii.*;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.BufferedReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.UnsupportedEncodingException;
import java.io.InputStreamReader;
import java.io.Reader;
import javax.xml.transform.sax.SAXResult;
import javax.xml.transform.sax.SAXSource;
import javax.xml.transform.stream.StreamSource;
import javax.xml.validation.Schema;
import javax.xml.validation.SchemaFactory;
import javax.xml.validation.Validator;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
@SuppressWarnings("unused")
public class CustomValidator extends AbstractTransformation {
     public void transform(TransformationInput arg0, TransformationOutput arg1)
               throws StreamTransformationException {
          Validator validator;
          InputStreamReader insr;
          String inputPayloadString;
          try {
               // Trace
               getTrace().addInfo("com.xxx.pi.mapping.validation.CustomValidator called");
               InputStream inputPayloadStream = arg0.getInputPayload()
                         .getInputStream();
               insr = new InputStreamReader(inputPayloadStream);
               InputHeader inpHeader = arg0.getInputHeader();          
               String intfName = inpHeader.getInterface();
               getTrace().addInfo("Interface Name is :" + intfName);
               String xsdName = "";
               if (intfName
                         .equalsIgnoreCase("SI_xxx_Sync_Outbound")) {
                    xsdName = "Z_xxx.xsd";
               if (intfName.equalsIgnoreCase("SI_xxx")) {
                    xsdName = "Z_xxx.xsd";
               if (intfName
                         .equalsIgnoreCase("SI_xxx_Sync_Outbound")) {
                    xsdName = "Z_xxx.xsd";
               if (intfName
                         .equalsIgnoreCase("SI_xxxx_Sync_Outbound")) {
                    xsdName = "Z_xxx.xsd";
               getTrace().addInfo("Using schema: " + xsdName);
               if (xsdName.equals(""))
                    throw new StreamTransformationException("Schema für "
                              + intfName + " nicht gefunden.");
               BufferedReader reader = new BufferedReader(new InputStreamReader(
                         getClass().getResourceAsStream(
                                   "/com/xxx/pi/mapping/xsd/" + xsdName)));
               // prepare document validator:
               String schemaLang = "http://www.w3.org/2001/XMLSchema";
               SchemaFactory jaxp = SchemaFactory.newInstance(schemaLang);
               Schema schema = jaxp.newSchema(new StreamSource(reader));
               validator = schema.newValidator();
          } catch (SAXException saxe) {
               throw new StreamTransformationException(saxe.getMessage());
          // validate
          try {
               SAXSource source = new SAXSource(new InputSource(insr));
               validator.validate(source);
          } catch (Exception e) {
               getTrace().addInfo(e.getMessage());
               String trace = e.getMessage();
               throw new StreamTransformationException(trace, e.getCause());
          // Write the response
          try {
               inputPayloadString = convertStreamToString(arg0.getInputPayload()
                         .getInputStream());
               arg1.getOutputPayload().getOutputStream()
                         .write(inputPayloadString.getBytes("UTF-8"));
               getTrace().addInfo("Schema Validierung erfolgreich !");
          } catch (Exception e) {
               throw new StreamTransformationException(e.getMessage());
     // helper to convert to String
     private static String convertStreamToString(InputStream in) {
          StringBuffer sb = new StringBuffer();
          try {
               InputStreamReader isr = new InputStreamReader(in);
               BufferedReader reader = new BufferedReader(isr);
               String line;
               while ((line = reader.readLine()) != null) {
                    sb.append(line);
          catch (Exception exception) {
          return sb.toString();