Are you looking for just MDN setup?
In current how much EDIINT setup is it in place?..
Were you able to send request to your TP via (EDIINT:send) to their AS2 URL configured in your trading partner profile Delivery section and also settings under Extended fields section Custom EDIINT fields like sMIME etc…?
HTH,
RMG
#webMethods#Integration-Server-and-ESB#B2B-Integration