The objective of this techdoc is to show how the Message ID (MsgId) and the Correlation ID (CorrelId) in an MQ Message Descriptor (MQMD) are handled in a message that is sent from a Remote Queue Definition to a Transmission Queue, and from there to the destination queue.
This document uses a visualization of WMQ message headers shown as envelopes to help explain the relationship between MsgId and CorrelId as messages go on and off a transmit queue.
Related WebSphere Support Technical Exchange (WSTE) webcast:
A Day in the Life of a WebSphere MQ Transmission Queue
Description: This webcast focuses on how the WebSphere MQ message descriptor is handled in a message that is sent from a remote queue definition to a transmission queue. Additional topics related to the transmission queues are also covered, such as basic troubleshooting, clusters and triggering of channels.
The attached PDF file has the details for this techdoc:
File: How the MQ Message Descriptor is handled in a Transmission Queue.pdf
17 June 2018