I have been working on automating SMS delivery using the Digital Engagement Channel. Both the Channel and the Messaging Component are defined and active. I am using the "Send Conversation Message" action in a Flow to send the SMS.
The Flow executes successfully, and the ConvMessageSendReq returns a success report. I checked the Conversation and MessagingSession records, and they are populating correctly. I also verified that the running user has the required Messaging User license. Furthermore, I checked for a MessageDeliveryError, and no errors are being logged.
Despite all of this, the message is not being sent to the MessagingEndUser. The MessagingEndUser phone number is properly formatted in E.164 format with the country code.
No ConversationEntry Record is being created.
Where am I going wrong? Did I miss a configuration step, or is there something else I need to check?