I created my jms destinations from asadmin (rather then with imqcmd) like so:
create-jmsdest --port 6048 -desttype queue --property maxNumActiveConsumers=10 jms_conduit_a_OutboundQueue
I can only assume that asadmin properly propagated the maxNumActiveConsumers property into the MQ config... Unfortunately, I don't see a way with asadmin or imqcmd to list the properties set on a jms destination. Similarly, the admin console does not have a properties page for jms destinations!
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