I am trying to post an XSD file to SAP through HTTP comm channel. I have used the URL option in the comm channel. The PI is successfully hitting the service in SAP but says "Received HTTP packet has no payload or does not have expected payload". I see a successful flag in PI moni for the message processed. FYI, it is IDOC to PI to XSD scenario. I am wondering what is happening to the message. Another thing is i am not seeing the XSD payload in Moni after transformation though the message shows successfully processed. Please suggest.