Setting this property indicates to the queue manager to treat a message as Retained Publication. When a subscriber receives messages from topics, it may receive additional messages immediately after subscribing, beyond those that would have been received in previous releases. These are the optional retained publication(s) for the topic(s) subscribed. For each topic matching the subscription, if there is a retained publication it will be made available for delivery to the subscribing message consumer.
RETAIN_PUBLICATION is the only valid value for this property. By default this property is not set.