Dossies @ Work: Dynamics 365 CDS

I'm recently involved in an integration project concerning MS CRM 4.0 and BizTalk 2009. As a BizTalk newbie, I want to share some of the problems I encountered during development. Here's the first one: Microsoft.XLANGs.Core.UnexpectedMessageTypeException: Received unexpected message type '' does not match expected type If you have this BizTalk exception after you deploy your orchestration: Check the pipeline settings in your send port; check if it hasn't changed into PassThruTransmit/PassThruReceive instead of XmlTransmit/XmlReceive.