Hi Adrianto,
The button to delete queue messages is meant for all unprocessed messages ( status is RECEIVED, ERROR). In a real day scenario, you do not need to delete the messages from the queue if they are not processed yet to the external system / Publishing channel. Deletion of queue is only recommended in two scenarios
- A high throughput (beyond the standard capacity of the queue) is accidentally/unintentionally triggered.
- A message is stuck in ERROR and you are unable to process / delete the record and require a restart of the queue to reset/flush the queue engine.