Thanx for the Response Rusell. I have tried your both technoques to debug. Finally the conclusion is that. it Passes through Conctruct Messages and Sends Message through Orchestration in Debug mode.
but i received 2 messages in 1 message it RETURNS=”Successfully Send a Message (My String Message)”;
in second message in after debug is an error .. which is :
<SOAP:Envelope xmlns:SOAP=”http://schemas.xmlsoap.org/soap/envelope/” SOAP:encodingStyle=”http://schemas.xmlsoap.org/soap/encoding/”><SOAP:Body><SOAP:Fault><faultcode>Microsoft BizTalk Server Negative Acknowledgment </faultcode><faultstring>An error occurred while processing the message, refer to the details section for more information </faultstring><faultactor>net.tcp://localhost:9002/WCFTEST</faultactor><detail><ns0:NACK Type=”NACK” xmlns:ns0=”http://schema.microsoft.com/BizTalk/2003/NACKMessage.xsd”><NAckID>{B4D96C2F-1B0D-4B1A-8560-386FF9E92365}</NAckID><ErrorCode>0xc0c016b7</ErrorCode><ErrorCategory>0</ErrorCategory><ErrorDescription>System.ApplicationException: The response message body was not read. (This may indicate the connection has been closed.)</ErrorDescription></ns0:NACK></detail></SOAP:Fault></SOAP:Body></SOAP:Envelope>