Hi , Thanks in advance... 1. a) I am having Orchestration subcribed to a message(request) direct bind. b) Map Request schema to ACK schema c) Flat file pipeline for receive and send 2. a) On physical layer i have configured MLLP Request Response port b) Outbound map set to the map in 1 a) c) Recive location configured for MLLP, given host name,port number etc. d) Recive pipeline and send pipeline specified as in 1 c). But i am able to receive the Request from MLLP and orchestration able to process it. But not able to get the Response ACK message. I am using MLLP utilies mllpsend.exe .. Please help in the same respect.... url:http://www.ureader.com/gp/1202-1.aspx