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"und" is not a valid lexical representation of {http://www.w3.org/2001/XMLSchema}language
java.lang.IllegalArgumentException: "und" is not a valid lexical representation of {http://www.w3.org/2001/XMLSchema}language	at weblogic.xml.schema.types.XSDLanguage.validateXml(XSDLanguage.java:93)	at weblogic.xml.schema.types.XSDLanguage.getCanonicalXml(XSDLanguage.java:127)	at weblogic.xml.schema.types.XSDLanguage.getXml(XSDLanguage.java:111)	at weblogic.xml.schema.binding.internal.builtin.XSDLanguageSerializer.getContentFromObject(XSDLanguageSerializer.java:22)	at be.belgium.fsb.common.isocodes.LanguageSerializer.getContentFromObject(LanguageSerializer.java:37)	at weblogic.xml.schema.binding.internal.builtin.XSDSimpleTypeSerializer.writeContentToStream(XSDSimpleTypeSerializer.java:137)	at weblogic.xml.schema.binding.internal.builtin.XSDSimpleTypeSerializer.writeContents(XSDSimpleTypeSerializer.java:130)	at weblogic.xml.schema.binding.CodecBase.writeTypeAndContents(CodecBase.java:427)	at weblogic.xml.schema.binding.CodecBase.serializeLiteral(CodecBase.java:336)	at weblogic.xml.schema.binding.CodecBase.serialize_internal(CodecBase.java:250)	at weblogic.xml.schema.binding.CodecBase.serialize(CodecBase.java:193)	at weblogic.xml.schema.binding.internal.builtin.XSDSimpleTypeSerializer.serialize(XSDSimpleTypeSerializer.java:104)	at weblogic.xml.schema.binding.BeanCodecBase.writeElementContents(BeanCodecBase.java:422)	at weblogic.xml.schema.binding.BeanCodecBase.writeContents(BeanCodecBase.java:356)	at weblogic.xml.schema.binding.CodecBase.writeTypeAndContents(CodecBase.java:427)	at weblogic.xml.schema.binding.CodecBase.serializeLiteral(CodecBase.java:336)	at weblogic.xml.schema.binding.CodecBase.serialize_internal(CodecBase.java:250)	at weblogic.xml.schema.binding.CodecBase.serialize(CodecBase.java:193)	at weblogic.xml.schema.binding.SequenceCodecBase.doContents(SequenceCodecBase.java:271)	at weblogic.xml.schema.binding.SequenceCodecBase.writeContents(SequenceCodecBase.java:287)	at weblogic.xml.schema.binding.CodecBase.serializeLiteral(CodecBase.java:311)	at weblogic.xml.schema.binding.CodecBase.serialize_internal(CodecBase.java:250)	at weblogic.xml.schema.binding.CodecBase.serialize(CodecBase.java:193)	at weblogic.xml.schema.binding.BeanCodecBase.writeElementContents(BeanCodecBase.java:422)	at weblogic.xml.schema.binding.BeanCodecBase.writeContents(BeanCodecBase.java:356)	at weblogic.xml.schema.binding.CodecBase.writeTypeAndContents(CodecBase.java:427)	at weblogic.xml.schema.binding.CodecBase.serializeLiteral(CodecBase.java:336)	at weblogic.xml.schema.binding.CodecBase.serialize_internal(CodecBase.java:250)	at weblogic.xml.schema.binding.CodecBase.serialize(CodecBase.java:193)	at weblogic.xml.schema.binding.BeanCodecBase.writeElementContents(BeanCodecBase.java:422)	at weblogic.xml.schema.binding.BeanCodecBase.writeContents(BeanCodecBase.java:356)	at weblogic.xml.schema.binding.CodecBase.writeTypeAndContents(CodecBase.java:427)	at weblogic.xml.schema.binding.CodecBase.serializeLiteral(CodecBase.java:336)	at weblogic.xml.schema.binding.CodecBase.serialize_internal(CodecBase.java:250)	at weblogic.xml.schema.binding.CodecBase.serialize(CodecBase.java:193)	at weblogic.xml.schema.binding.BeanCodecBase.writeElementContents(BeanCodecBase.java:422)	at weblogic.xml.schema.binding.BeanCodecBase.writeContents(BeanCodecBase.java:356)	at weblogic.xml.schema.binding.CodecBase.writeTypeAndContents(CodecBase.java:427)	at weblogic.xml.schema.binding.CodecBase.serializeLiteral(CodecBase.java:336)	at weblogic.xml.schema.binding.CodecBase.serialize_internal(CodecBase.java:250)	at weblogic.xml.schema.binding.CodecBase.serialize(CodecBase.java:193)	at weblogic.xml.schema.binding.SequenceCodecBase.doContents(SequenceCodecBase.java:271)	at weblogic.xml.schema.binding.SequenceCodecBase.writeContents(SequenceCodecBase.java:287)	at weblogic.xml.schema.binding.CodecBase.serializeLiteral(CodecBase.java:311)	at weblogic.xml.schema.binding.CodecBase.serialize_internal(CodecBase.java:250)	at weblogic.xml.schema.binding.CodecBase.serialize(CodecBase.java:193)	at weblogic.xml.schema.binding.BeanCodecBase.writeElementContents(BeanCodecBase.java:422)	at weblogic.xml.schema.binding.BeanCodecBase.writeContents(BeanCodecBase.java:356)	at weblogic.xml.schema.binding.CodecBase.writeTypeAndContents(CodecBase.java:427)	at weblogic.xml.schema.binding.CodecBase.serializeLiteral(CodecBase.java:336)	at weblogic.xml.schema.binding.CodecBase.serialize_internal(CodecBase.java:250)	at weblogic.xml.schema.binding.CodecBase.serialize(CodecBase.java:193)	at weblogic.xml.schema.binding.BeanCodecBase.writeElementContents(BeanCodecBase.java:422)	at weblogic.xml.schema.binding.BeanCodecBase.writeContents(BeanCodecBase.java:356)	at weblogic.xml.schema.binding.CodecBase.writeTypeAndContents(CodecBase.java:427)	at weblogic.xml.schema.binding.CodecBase.serializeLiteral(CodecBase.java:336)	at weblogic.xml.schema.binding.CodecBase.serialize_internal(CodecBase.java:250)	at weblogic.xml.schema.binding.CodecBase.serialize(CodecBase.java:193)	at weblogic.xml.schema.binding.RuntimeUtils.invoke_serializer(RuntimeUtils.java:188)	at weblogic.xml.schema.binding.RuntimeUtils.invoke_serializer(RuntimeUtils.java:174)	at weblogic.webservice.core.DefaultPart.invokeSerializer(DefaultPart.java:328)	at weblogic.webservice.core.DefaultPart.toXML(DefaultPart.java:297)	at weblogic.webservice.core.DefaultMessage.toXML(DefaultMessage.java:645)	at weblogic.webservice.core.handler.InvokeHandler.handleRequest(InvokeHandler.java:150)	at weblogic.webservice.core.HandlerChainImpl.handleRequest(HandlerChainImpl.java:143)	at weblogic.webservice.core.DefaultOperation.process(DefaultOperation.java:549)	at weblogic.webservice.server.Dispatcher$1.run(Dispatcher.java:211)	at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:363)	at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:147)	at weblogic.webservice.server.Dispatcher.process(Dispatcher.java:217)	at weblogic.webservice.server.Dispatcher.doDispatch(Dispatcher.java:176)	at weblogic.webservice.server.Dispatcher.dispatch(Dispatcher.java:96)	at weblogic.webservice.server.WebServiceManager.dispatch(WebServiceManager.java:100)	at weblogic.webservice.server.servlet.WebServiceServlet.serverSideInvoke(WebServiceServlet.java:297)	at weblogic.webservice.server.servlet.ServletBase.doPost(ServletBase.java:485)	at weblogic.webservice.server.servlet.WebServiceServlet.doPost(WebServiceServlet.java:267)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)	at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run(ServletStubImpl.java:1072)	at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:465)	at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:348)	at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:6981)	at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)	at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)	at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:3892)	at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java:2766)	at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:224)	at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:183)