XI2.0 - message mapping question

Hello,

I've came accross such problem - I've implemented all the objects except the message mapping in IR. In ID there were correctly confiugred in business scenario. Outbound Message Type name is MsgOut... can anyone explain me why XI Server during runtime (when there is no message mapping to inbound message type) tries to apply MsgOut as inbound message type to Inbound Interface -error in SXI_MONITOR says that there's no inbound interface with MsgOut??.

The problem dissapears only when there's appropriate Message Mapping applied in IR.

Br,

Maciej