By parsing the words in the error message, it looks like it has something to do with a phone number and text messaging.
SMS is a text message method. And a required 10-digit number implies a phone number. Did you elect to receive something by text message and provided an invalid phone number that doesn't have 10 digits or that can't receive SMS text messages?
What product are you using? Are you using Online TurboTax via a web browser on a computer? Or are you using the TurboTax Mobile App on a portable device? Or are you using Online TurboTax via a browser on a mobile device?
