NullPointerException while executing an RFC

[Former Member]

Hi all,

We trying to execute an RFC but we receiving a null pointer exception when it tries to create a model object ie. Suppose the RFC is Z_RFC, it shows error at the line

new Z_RFC();

The error trace is given below

java.lang.NullPointerException

at com.sap.tc.webdynpro.modelimpl.dynamicrfc.AiiModelClass.createNewBaseTypeDescriptor(AiiModelClass.java:220)

at com.sap.tc.webdynpro.modelimpl.dynamicrfc.AiiModelClass.descriptor(AiiModelClass.java:186)

at com.danfoss.mat.Zmaterial_Price_Input.<init>(Zmaterial_Price_Input.java:51)

at com.sdn.app.SDNDropApp.wdDoInit(SDNDropApp.java:102)

at com.sdn.app.wdp.InternalSDNDropApp.wdDoInit(InternalSDNDropApp.java:123)

at com.sap.tc.webdynpro.progmodel.generation.DelegatingComponent.doInit(DelegatingComponent.java:95)

at com.sap.tc.webdynpro.progmodel.controller.Controller.initController(Controller.java:215)

at com.sap.tc.webdynpro.progmodel.controller.Controller.init(Controller.java:200)

at com.sap.tc.webdynpro.clientserver.cal.ClientComponent.init(ClientComponent.java:346)

at com.sap.tc.webdynpro.clientserver.cal.ClientApplication.init(ClientApplication.java:352)

at com.sap.tc.webdynpro.clientserver.task.WebDynproMainTask.execute(WebDynproMainTask.java:593)

at com.sap.tc.webdynpro.clientserver.cal.AbstractClient.executeTasks(AbstractClient.java:59)

at com.sap.tc.webdynpro.clientserver.cal.ClientManager.doProcessing(ClientManager.java:249)

at com.sap.tc.webdynpro.serverimpl.defaultimpl.DispatcherServlet.doWebDynproProcessing(DispatcherServlet.java:154)

at com.sap.tc.webdynpro.serverimpl.defaultimpl.DispatcherServlet.doContent(DispatcherServlet.java:116)

at com.sap.tc.webdynpro.serverimpl.defaultimpl.DispatcherServlet.doGet(DispatcherServlet.java:48)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)

at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.runServlet(HttpHandlerImpl.java:385)

at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.handleRequest(HttpHandlerImpl.java:263)

at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:340)

at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:318)

at com.sap.engine.services.httpserver.server.RequestAnalizer.invokeWebContainer(RequestAnalizer.java:821)

at com.sap.engine.services.httpserver.server.RequestAnalizer.handle(RequestAnalizer.java:239)

at com.sap.engine.services.httpserver.server.Client.handle(Client.java:92)

at com.sap.engine.services.httpserver.server.Processor.request(Processor.java:147)

at com.sap.engine.core.service630.context.cluster.session.ApplicationSessionMessageListener.process(ApplicationSessionMessageListener.java:37)

at com.sap.engine.core.cluster.impl6.session.UnorderedChannel$MessageRunner.run(UnorderedChannel.java:71)

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:94)

at com.sap.engine.core.thread.impl3.SingleThread.run(SingleThread.java:162)

Any help would be appreciated.

Regards

Noufal

[Former Member]

Hi Noufal,

can you try undeploying your application from the SDM? Then restart your J2EE server, re-import the model and then deploy it.

Regards,

Satyajit.

[Former Member]

Hi Noufal,

Please give your Model structure. So, i can help for this.

Regards,

Bhavik

[Former Member]

Hi, I have the same problem. Could you please post how did you solved this problem?.

Regards.

[Former Member]

Hi Noufal

Switch on tracing for location <b>com.sap.tc.webdynpro.modelimpl.dynamicrfc</b> and examine trace to see what is happening.

Regards

Pran