PubSubNPInputMsg (MQLONG)

Whether to discard or keep an undelivered input message.

The value is one of the following:

    MQUNDELIVERED_DISCARD
    Non-persistent input messages may be discarded if they cannot be processed.

    This is the default value.

    MQUNDELIVERED_KEEP
    Non-persistent input messages will not be discarded if they cannot be processed. In this situation the queued publish/subscribe interface will continue to retry the process at appropriate intervals and does not continue processing subsequent messages.

To determine the value of this attribute, use the MQIA_PUBSUB_NP_MSG selector with the MQINQ call.