Error inthe sender RFC

BAPI -XI- XML

When i am sending BAPI from sap to xi i getting following error .

"call to messaging system failed: com.sap.aii.af.ra.ms.api.DeliveryException

But the bapi as posted in to xi.

when i want check in sxmb_moni there no message for selection

but it is populated in reciver system.

so plz help me regarding this

upendra