Ok, let me describe communications between ECC and SNC:
Flow 1:
ECC (STPPOD.DELVRY03 - Sender IDoc) -->
Operation Mapping :StppodDelvry03_ReceivedDeliveryNotification_01 (XSLT Mapping provided by SAP) ->
SNC (ReceivedDeliveryNotification_In - Receiver Proxy)
Flow 2:
SNC (DespatchedDeliveryNotification_Out- Sender Proxy) -->
Operation Mapping :DespatchedDeliveryNotification_DesadvDelvry03_01 (XSLT Mapping provided by SAP) ->
ECC (DESADV.DELVRY03 - Receiver IDoc)
Regards,
Nabendu.