The MQRFH2 message header carries JMS-specific data that is
associated with the message content. It can also carry additional
information that is not directly associated with JMS. The message
header contains the following folders:
- The <mcd> folders contains properties that describe the
"shape" or "format" of the message.
- The <jms> folder is used to transport JMS header fields,
and JMS properties that cannot be fully expressed in the MQMD. This
folder is always present in the messages implemented using JMS,
which are sent by the connector framework. However, in the business
integration system, this folder is irrelevant and is omitted by the
WebSphere message broker when sending messages to the connector
framework.
- The <usr> folder is used to transport any
application-defined properties associated with the message. This
folder is only present if the application has set some
application-defined properties. In the business integration system,
this folder is used to send return status information in a response
message. The tables below identify the types of messages that
require this folder.
