SAP BOXIR4 Webservices SDK - Login Issues

Hi All

I am using the Webservice JAVA SDK to login to the BO server, using the following code.  Version of BO server is R4

String srvcUrl = "http://server:8080/dswsbobje/services/";

Connection conn = new Connection(new URL(srvcUrl + "Session"));

Session es = new Session(conn);

es.login(getCredentials( domain, auth, uid, pwd));

its giving me the following error on es.login() method

Exception in thread "main" org.apache.axis2.AxisFault: login The exception is of a known origin. (Error: FWM 20030)

  at com.businessobjects.dsws.Consumer.dswsExceptionDocToAxisFault(Consumer.java:876)

  at com.businessobjects.dsws.session.Session.login(Session.java:453)

  at bo.ondemand.test.TestOnDemandMain.main(TestOnDemandMain.java:37)

Can anybody help me to solve the issue the login issue?

Thanks in Advance

Prabin