Check your SMS API and DLT Parameters

1. Visit your SMS logs option from the left menu: 

2. To check your API and its parameters, click on the icon:

3. Identify the API version (base URL):

4. The request logs can help you identify if all the parameters in your API are correct.
Check for your Sender Id, Your Template (Message), and your passed Template Id (DLT_TE_ID)

5. Once identified, go back to this doc and make the necessary changes.