You attempt to put messages onto a WebSphere MQ cluster alias queue, that has a base queue that is also a cluster alias queue. This second cluster alias queue is hosted on a second cluster queue manager and has a base queue that is a cluster queue in another queue manager. You receive a reason code 2082 ( MQRC_UNKNOWN_ALIAS_BASE_Q ) in the DLQ Header – the message goes to the DEAD LETTER QUEUE in the second cluster Queue Manager.

Fortunately this is in a Non-Production System and usually occurs after removing Duplicate Cluster QMGR Definitions using the RESET CLUSTER command.

All the definitions are correct. We have found that the simplest resolution is to delete and redefine the Cluster Queue on the Base Queue Manager.