Third party is sending IDOC (EDI_DC40 relevant?)

Hi,

I need to send an IDOC from a third party to an SAP system via XI. My problem is the first part: ThirdParty->IDOC.

Now I have done the following steps:

- RFC connection between Third party and XI works fine

- define Third Party as busines system in SLD and assign a logical system name to it

- enter logical system name in BD54 in XI and SAP

- define sending IDOC communication channel

- define receiving IDOC communication channel

My question for the <b>sending</b> part:

Are there any entries in EDI_DC40 for the sending third party system neccessary for XI (Sender System/Port/... Receiver System/Port/... etc.)? If yes which entries are neccessary?