Message Transmission
You can add a message to a file and then transfer the file. This function is called 'Message Transmission.'
You can find sent messages in the Send log records.
On the other hand, you can find received messages in the Send log records as well as in the Receive log records. The information in the message can be used as environment variables for arguments such as the Receive file name and the Post-receive Job.
Specify the target message for a dynamic change using parameters in a command.

Figure 2.32 Message Transmission