The MQRFH2 header is used to pass messages to and from an integration node that belongs to IBM® Integration Bus.
In a message, the MQRFH2 header follows the WebSphere® MQ message descriptor (MQMD) and precedes the message body, if present. The MQRFH2 header can be parsed by either the MQRFH2 parser or the MQRFH2C parser.
Other headers, such as the IMS/ESA® or CICS® bridge headers, are allowed either before or after the MQRFH2 header, but before the message body.
If you are using the Message Queuing Interface (MQI) to write application programs you need to understand the structure and content of the MQRFH2 header.
A message can have more than one MQRFH2 header.