IDOC 2 XI: No receiver could be determined

Hello,

I am glad to send a IDoc to XI!

In IDX5 I got the error:

<u>No receiver could be determined</u>

Many questions:

I wonder there is a "Sender Agengy": bss_lp_idoc an

a "Sender service" bss_lp_idoc

1) Are the names for "Sender Agengy" and "Sender service" generated by the system?

2) What do I have to do to determine a receiver?

<u>additional information:</u>

IDOC has MESTYP = SYIDOC

IDOC has IDOCTYP = SYIDOC01.

IDOC-RCVPRT = LS

Thanks a lot!

Regards Mario