We perform the failover with a certain amount of messages 20992 and we end up with 20993. When the failover occurs at the MQCMIT failure the message that was last to be put to the queue is replicated.
Our homegrown API that does a PMO with syncpoint and mqcmit in a Multi-instance NFS MQ V9.4 environment generates an extra message during failover exercise. Any help would greatly be appreciated.