Adobe highly recommends setting up a delivery validation cycle. Make sure your content is approved before sending it to your audience.
You can send a proof for your SMS delivery to validate it:
Click on Send a proof button, a window will be opened
You have multiple modes to send a proof:
After choosing your Targeting mode, add your proof addresses according to it
In the example below, we choose Definition of a specific proof target, and add a recipient:
Click on the Analyze button.
Adobe Campaign will perform all the control before validating the send of proof. At the end of the analysis, the Confirm delivery button will be clickable.
To send the proof of your SMS delivery, click on Confirm delivery button.
If all is right at this stage, you can go forward and send your SMS delivery to the audience.