2448911 - While running rs_init, got ID Server says this name is already being used

rs_init ends with the following error message.

Task succeeded: create the Replication Server configuration file.
Running task: create the Replication Server runserver file.
Task succeeded: create the Replication Server runserver file.
Running task: start the Replication Server.
waiting for server 'RS2' to boot...

SERVER ERROR: Failed to boot server 'RS2'.

Replication Server log shows the following error message.

I. 2017/03/28 13:52:55. Contacting the ID Server for a siteid.
E. 2017/03/28 13:52:55. ERROR #42 GLOBAL RS(GLOBAL RS) - neric/cfg/cfgfirst.c(162)
        Expected this name 's6.RS2_RSSD' to be new to the system. But, ID Server says this name is already being used.
F. 2017/03/28 13:52:56. FATAL ERROR #18028 GLOBAL RS(GLOBAL RS) - /servmain/servmain.c(1964)
        Initialization failed. Server is shutting down.
F. 2017/03/28 13:52:56. FATAL ERROR #18028 GLOBAL RS(GLOBAL RS) - /servmain/servmain.c(334)
        Initialization failed. Server is shutting down.

Replication Server

"sysadmin dropdb"   "sysadmin droprs"  "ID Server says this name is already being used" , KBA , BC-SYB-REP , Sybase Replication Server (standalone) , Problem