Received message: the DR indicates the message has been received.
Not received message: the DR indicates the message has not been received. Not received messages are detailed as follow:
Invalid number: it means the number is no longer assigned;
Network error: the recipient did not have any network on his phone when the message was send, it will be send again regularly during 48h hours;
Expired: the message could not be send to this recipient for various reason, therefore it expired
Other: other reasons explain why the message was not receive
DR not available: we did not receive a Delivery Report. This number is final 48h after the sending.