On a recent project I worked on we had to relay some SOAP messages between two systems using BizTalk Server 2006 R2. These messages had some custom SOAP headers with the mustUnderstand attribute set to "1". This poses a problem for BizTalk when using the WCF adapters. The WCF-BasicHttp receive adapter raises a System.ServiceModel.MustUnderstandSoapException exception and the processing of the message in BizTalk halts...
2010-07-07 Kalle Huttunen