I have been facing this error since I tried to submit my return weeks ago. My security phone number is a Brazil phone number, because I live abroad. Last year this error did not occur. What validation was added to TurboTax that makes international users unable to use the product now?
EDIT: Using this workaround I was able to submit my return: https://ttlc.intuit.com/community/taxes/discussion/re-error-in-transmission-invalid-sms-number-must-...
