In older versions of Iguana, if a channel has From Database as its source component and LLP Client as its destination component, only one message is created at a time. The message is generated from the database and sent out, and is only marked as successfully sent when it has been acknowledged by the application that received it.

In Iguana 4.0, the From Database source component creates messages as quickly as possible and stores the generated messages in a message queue. When a generated message is stored in the message queue, the STATUS field in the message status table is set to Success.

	For more information on how the From Database source component interacts with the message status table, see the tutorial example in Basic Database Schema.

The LLP Client component reads a message from the message queue and sends it, waits for the receiving application to send an ACK message back, then reads another message from the queue and sends it.