Regarding Party Creation

hello all,

i have a problem where i need to send an idoc from my R/3 system to my xi system process it ans store it in a specific location, but the idoc i am sending is of type "Customer" i.e KU. i am able to find the xml idoc send from the R/3 system in my monitor but it showing a message "service and party not defined". i tried creating a party but failed.

can any one tell me how to create a party, any naming conventions etc and also how do we configure data in communication channel, identifier tab.

i am relatively new to xi so if some one could explain me briefly it would be helpful

thanks,

Raju N