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Former Member
Oct 21, 2007 at 09:39 PM

com.sap.mw.jco.JCO$Exception: (102) RFC_ERROR_COMMUNICATION

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Hi Experts,

ERP2004, EP 6.0 SP20.

I am trying to define JCO Connections for ESS/MSS applications. I am getting the following exceptions when I try to "Test" the connection.

com.sap.mw.jco.JCO$Exception: (102) RFC_ERROR_COMMUNICATION: Connect to message server host failed Connect_PM TYPE=B MSHOST=sapdv2 GROUP=PUBLIC R3NAME=DV2 MSSERV=sapmsDV2 PCS=1 ERROR service 'sapmsDV2' unknown TIME Sun Oct 21 14:59:37 2007 RELEASE 640 COMPONENT NI (network interface) VERSION 37 RC -3 MODULE niuxi_mt.c LINE 579 DETAIL NiPGetServByName2: service 'sapmsDV2' not found SYSTEM CALL getservbyname_r COUNTER 1

I have verified other threads, did the following:

1. I have checked in the transaction SMLG for logon group: PUBLIC. It is not there. How to create a log on group on r/3 side? May be it is easy please give me your suggestions.

2. I also have to check for the entry in the "services" file on R/3 Server.