Problems with strict message validation of EDI Receive Pipeline

One Solution could be to unset EDI Validation strictness in EDI properties of a party. Just select EDI Properties->Party as Interchange Sender, then ACK Generation and Validation Settings. There is a checkbox labelled EDI type. If you uncheck this checkbox, Biztalk Server 2006 R2 EDI receive pipeline d’ont proove message on EDI conformness anymore.