I am testing a script for sending SMS. That testing script retrieves 5 records and send an SMS for each customer. I have made tests with my co-workers and one of them has not received the SMS and the other 4 have received it correctly. Apparantly the process has run OK for all. I've checked in the _UndeliverableSMS table but there was any information related to my colleague phone number.
Is there any table where I can check if an SMS has been sent correctly or any problem has occurred with a SMS sent?