The publisher workstep adds the JMS header property MessageName and assigns it the value of message name. Also, the following system properties are automatically added to identify the sender.
SenderAppName
SenderTemplateName
SenderInstanceId
SenderTaskName
The receiver can use these properties to communicate with the sender on need basis. For example, the receiver can send a reply message to the sender using the above header information.
Apart from the above system properties, user can optionally add any custom property (available in the message meta data file) to the message header for dynamic content and map it to the dataslots or constants.