Note: In defining an automated message, more than one communication channel can be specified. For example, you can define an automated message that is sent through all three channels introduced above. But it is important to know that the message is sent to the user through these channels only when there is the channel's way to communicate with him/her. For example, if the recipients' numbers are not registered in the order information, an SMS will not be sent to them. Or, for example, if customers have not installed the Customer Application on their mobile phone, they will not receive a push notification.