Blackberry read messages not updating
The watermark identifier establishes where after, the target device can start reading messages.The watermark identifier is a system-generated UUID.
The diagram below illustrates how this example: Conversely, if the target device doesn't send an acknowledgment for any of the first three messages or if the acknowledged message was lost, the target device would reread messages 1, 2, and 3 because the watermark hasn't changed.
When the target device makes a request to get messages, it can optionally specify to retrieve up to 25 messages at a time.
If no number is specified, the default is to read up to 25 messages.
It's important to remember that the message types are application-defined and the message types are not managed by the Black Berry Io T Platform.
Messages are read by the target device when it's ready.