This description uses my general-purpose test client, which is available from here: https://github.com/kevinboone/amqutil However, it should be possible to reproduce using a few lines of Java. 1. Start AMQ 7 broker instance. 2. Produce some messages to the broker: $ amqutil produce 100 --destination TEST.FOO 3. Retrieve a message, to check the message ID format: $ amqutil consume --destination TEST.FOO ID:fedora-45435-1659361941138-1:1:1:1:1 TextMessage 4. Try to retrieve a message using a selector that ought to match: $ amqutil consume --destination TEST.FOO --selector "JMSMessageID like '%fedora%' " Note that "fedora" is my hostname – the message ID format will be different on other sytems. With the selector, no messages are retrieved. Selectors based on ordinary JMS message headers work fine – it's just the message ID that's shows a problem. The same process works fine with ActiveMQ – selectors match on JMSMessageID just fine. It also works on AMQ 7 using AMQP ("–qpid") or Artemis core ("–artemis") protocols, although the formats of the message ID are different in each case (which might be the source of the problem).