You are getting below error in dev_ms,
[Thr 47837602835360] Sat Jun 8 22:38:01 2013 [Thr 47837602835360] ***LOG Q0O=> MsSLoginClient, not_unique (HOSTNAME_SID_00) [msxxserv_mt. 3503] [Thr 47837602835360] Sat Jun 8 22:38:41 2013 [Thr 47837602835360] ***LOG Q0O=> MsSLoginClient, not_unique (HOSTNAME_SID_00) [msxxserv_mt. 3503] [Thr 47837602835360] Sat Jun 8 22:39:01 2013 [Thr 47837602835360] ***LOG Q0O=> MsSLoginClient, not_unique (HOSTNAME_SID_00) [msxxserv_mt. 3503]
and in SM21,
Failed to send a request to the message server Multiple Client logon (HOSTNAME_SID_00) for message server
Solution
• Refer to SAP Note 311118
• Ensure no duplicate process of the server (HOSTNAME_SID_00) – mainly occurred for SAP system with multiple instances and configured on different hosts.
