About the SMS Node
Send an SMS message to those Profiles who enter the node.
In the first step of creating a Marketing Automation SMS node, you'll choose a Consent list and Topics for this and all your SMS nodes. All SMS nodes created afterwards will send to the same Consent list and Topics.
You can change the Consent list and Topics in your Flow Settings under the Consent tab. Read more about Flow Settings...
Click Configure to create a new SMS.
For more detailed information about creating an SMS, head over to Creating an SMS.