If an input node receives an input message that includes message headers that the input node recognizes, the node invokes the correct parser for each header. Parsers are supplied for most WebSphere MQ headers. The topics listed below provide guidance for accessing the information in the MQMD and MQRFH2 headers that you can follow when accessing other headers that are present in your messages.
For further details of the contents of these and other WebSphere MQ headers for which WebSphere Message Broker provides a parser, see Element definitions for message parsers.