We have a custom message type for material master. The partner profile is set up correctly with synch as one of the message types in the outbound parameters. The distribution model is set up fine and has been distributed. All the config is set up and I have debugged the program RBDSEMAT. The communication idoc is not created at all although the master idoc is created. Code works for other partner profiles which have been set up similarly, only diff is that in this message type the config is collect idocs. The program RSEOUT00 does not trigger the idoc either. Any suggestions.