Hello Kiran,
Resource Adapter Update
NetWeaver Administrator > Configuration (Konfiguration) > Infrastructure (Infrastruktur) > Resources (Anwendungsressourcen)
Then look for Resource Adapter inboundRA and there go to tab Properties (Eigenschaften) and check property multiRepository. There you should find values like System_Name=XI_IDOC_DEFAULT_DESTINATION_System_Name;-> If you don't find new system there then it's not yet configured so you must create new destination and add that string here.
NetWeaver Administrator > Configuration (Konfiguration) > Infrastructure (Infrastruktur) > Destinations (Destinationen)
Here you create new destination called XI_IDOC_DEFAULT_DESTINATION_System_Name (as you reference from resource adapter) with the parameters provided by client for given system.
Hope this is what you are looking for..!!
Regards
S Tomar