Hello Exports
I am working in NetWeaver Portal Version 7.0. I have some existing webdynpro DCs. these webdynpro contains web service models.
In one DC I am having some problem. Like while running it in test portal getting 500 internal server error (Failed to process request. Please contact your system administrator) .
I have attached the error screen shot below.
I checked the logs and trace in NWA getting some error like:
Exception occured during processing of Web Dynpro application sap.com/caf~eu~gp~ui~rt/Runtime. The causing exception is nested.
[EXCEPTION]
java.lang.IllegalArgumentException: Cannot perform write operation 'setRelatedModelObject' on target role: Class 'RetrieveCustomer' is not compatible to class 'GetConnInfo' of target role 'RetrieveCustomer' in model class 'Request_RetrieveCustomer'
at com.sap.tc.webdynpro.model.webservice.base.model.BaseGenericModelClass.checkRoleCompatibleClass(BaseGenericModelClass.java:158)
at com.sap.tc.webdynpro.model.webservice.base.model.BaseGenericModelClass.setRelatedModelObject(BaseGenericModelClass.java:351)
at com.sap.tc.webdynpro.model.webservice.gci.WSTypedModelClass.setRelatedModelObject(WSTypedModelClass.java:70)
at com.bp.cmd.wd.ship.model.Request_RetrieveCustomer.setRetrieveCustomer(Request_RetrieveCustomer.java:66)
at com.bp.cmd.wd.ShipToComp.retrieveCustomer(ShipToComp.java:378)
at com.bp.cmd.wd.wdp.InternalShipToComp.retrieveCustomer(InternalShipToComp.java:1583)
at com.bp.cmd.wd.ShipToSoldToInfoView.wdDoModifyView(ShipToSoldToInfoView.java:225)
at com.bp.cmd.wd.wdp.InternalShipToSoldToInfoView.wdDoModifyView(InternalShipToSoldToInfoView.java:445)
at com.sap.tc.webdynpro.progmodel.generation.DelegatingView.doModifyView(DelegatingView.java:78)
at com.sap.tc.webdynpro.progmodel.view.View.modifyView(View.java:337)
at com.sap.tc.webdynpro.clientserver.cal.ClientComponent.doModifyView(ClientComponent.java:480)
at com.sap.tc.webdynpro.clientserver.cal.ClientComponent.doModifyView(ClientComponent.java:487)
at com.sap.tc.webdynpro.clientserver.cal.ClientComponent.doModifyView(ClientComponent.java:487)
at com.sap.tc.webdynpro.clientserver.cal.ClientComponent.doModifyView(ClientComponent.java:487)
at com.sap.tc.webdynpro.clientserver.cal.ClientComponent.doModifyView(ClientComponent.java:487)
at com.sap.tc.webdynpro.clientserver.window.WindowPhaseModel.doModifyView(WindowPhaseModel.java:551)
at com.sap.tc.webdynpro.clientserver.window.WindowPhaseModel.processRequest(WindowPhaseModel.java:148)
at com.sap.tc.webdynpro.clientserver.window.WebDynproWindow.processRequest(WebDynproWindow.java:335)
at com.sap.tc.webdynpro.clientserver.cal.AbstractClient.executeTasks(AbstractClient.java:143)
at com.sap.tc.webdynpro.clientserver.session.ApplicationSession.doProcessing(ApplicationSession.java:299)
at com.sap.tc.webdynpro.clientserver.session.ClientSession.doApplicationProcessingPortal(ClientSession.java:766)
at com.sap.tc.webdynpro.clientserver.session.ClientSession.doApplicationProcessing(ClientSession.java:701)
at com.sap.tc.webdynpro.clientserver.session.ClientSession.doProcessing(ClientSession.java:255)
at com.sap.tc.webdynpro.clientserver.session.RequestManager.doProcessing(RequestManager.java:154)
at com.sap.tc.webdynpro.clientserver.session.core.ApplicationHandle.doProcessing(ApplicationHandle.java:73)
at com.sap.tc.webdynpro.portal.pb.impl.AbstractApplicationProxy.sendDataAndProcessActionInternal(AbstractApplicationProxy.java:879)
at com.sap.tc.webdynpro.portal.pb.impl.localwd.LocalApplicationProxy.sendDataAndProcessAction(LocalApplicationProxy.java:77)
at com.sap.portal.pb.PageBuilder.updateApplications(PageBuilder.java:1291)
at com.sap.portal.pb.PageBuilder.SendDataAndProcessAction(PageBuilder.java:325)
at com.sap.portal.pb.PageBuilder$1.doPhase(PageBuilder.java:831)
at com.sap.tc.webdynpro.clientserver.window.WindowPhaseModel.processPhaseListener(WindowPhaseModel.java:755)
at com.sap.tc.webdynpro.clientserver.window.WindowPhaseModel.doPortalDispatch(WindowPhaseModel.java:717)
at com.sap.tc.webdynpro.clientserver.window.WindowPhaseModel.processRequest(WindowPhaseModel.java:136)
at com.sap.tc.webdynpro.clientserver.window.WebDynproWindow.processRequest(WebDynproWindow.java:335)
at com.sap.tc.webdynpro.clientserver.cal.AbstractClient.executeTasks(AbstractClient.java:143)
at com.sap.tc.webdynpro.clientserver.session.ApplicationSession.doProcessing(ApplicationSession.java:299)
at com.sap.tc.webdynpro.clientserver.session.ClientSession.doApplicationProcessingStandalone(ClientSession.java:746)
at com.sap.tc.webdynpro.clientserver.session.ClientSession.doApplicationProcessing(ClientSession.java:699)
at com.sap.tc.webdynpro.clientserver.session.ClientSession.doProcessing(ClientSession.java:255)
at com.sap.tc.webdynpro.clientserver.session.RequestManager.doProcessing(RequestManager.java:154)
at com.sap.tc.webdynpro.serverimpl.defaultimpl.DispatcherServlet.doContent(DispatcherServlet.java:62)
at com.sap.tc.webdynpro.serverimpl.defaultimpl.DispatcherServlet.doPost(DispatcherServlet.java:53)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.runServlet(HttpHandlerImpl.java:390)
at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.handleRequest(HttpHandlerImpl.java:264)
at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:347)
at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:325)
at com.sap.engine.services.httpserver.server.RequestAnalizer.invokeWebContainer(RequestAnalizer.java:887)
at com.sap.engine.services.httpserver.server.RequestAnalizer.handle(RequestAnalizer.java:241)
at com.sap.engine.services.httpserver.server.Client.handle(Client.java:92)
at com.sap.engine.services.httpserver.server.Processor.request(Processor.java:148)
at com.sap.engine.core.service630.context.cluster.session.ApplicationSessionMessageListener.process(ApplicationSessionMessageListener.java:33)
at com.sap.engine.core.cluster.impl6.session.MessageRunner.run(MessageRunner.java:41)
at com.sap.engine.core.thread.impl3.ActionObject.run(ActionObject.java:37)
at java.security.AccessController.doPrivileged(Native Method)
at com.sap.engine.core.thread.impl3.SingleThread.execute(SingleThread.java:100)
at com.sap.engine.core.thread.impl3.SingleThread.run(SingleThread.java:170)
I am unable to check where is the issue exactly.
Please suggest me as a priority basis as the issue is in quality portal and our testing process stopped due to this issue.
Again requesting please please suggest me . I will really thankful if anyone can guide me to fix it.

Regards
Rashmita