Creating JCO Destinations Error

HI All,

Im getting this error when I test my JCO destinations after creating it :

com.sap.mw.jco.JCO$Exception: (102) RFC_ERROR_COMMUNICATION: Connect to message server host failed Connect_PM TYPE=B MSHOST=gsdcb081 GROUP=SPACE R3NAME=BS7 MSSERV=sapmsBS7 PCS=1 ERROR service 'sapmsBS7' unknown TIME Tue Nov 20 08:17:42 2007 RELEASE 700 COMPONENT NI (network interface) VERSION 38 RC -3 MODULE nixxhsl.cpp LINE 776 DETAIL NiHsLGetServNo: service name cached as unknown COUNTER 1

I have created only MODELDATA destination till now.

Any clues ?

/sab