Error while executeing model in webdynpro java

Question

Hi all,
             i created an application in webdynpro .
I got the following error while executing the modle.
thc code is given below
public void exuteCounterListData( java.lang.String GroupCounterValue )
//@@begin exuteCounterListData()
try{
wdContext.currentZ_Search_Group_Counter_InputElement().modelObject().setPlnnr(GroupCounterValue);
wdContext.currentZ_Search_Group_Counter_InputElement().modelObject().execute();
wdContext.nodeOutput().invalidate();
}catch(Exception e){
wdComponentAPI.getMessageManager().reportSuccess("CustomContoller - exuteCounterListData - Error - "+e );
wdComponentAPI.getMessageManager().reportException("CustomContoller - exuteCounterListData - Exception -"+e.getStackTrace(),false);
//@@end
the error which i am getting is given below
" com.sap.tc.webdynpro.modelimpl.dynamicrfc.WDDynamicRFCExecuteException: Error connecting using JCO.Client: null
Is there any wrong in my code??or the problem may be in the configarations of JCO
Regadrs
Padma N

Answer 1

i got similar problem and this is how i resolved
this is because jco connections are Using SSO and the user who is accessing that webdynpro application is not present in the backend system.
please make sure user is there in the backend system from which you are getting data
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Edited by: Armin Reichert on Feb 18, 2008 7:28 PM