i live abroad and dont have a US telephone number
See this TurboTax support FAQ for this error - https://ttlc.intuit.com/community/bugs-and-error-messages/help/why-am-i-getting-601errv-5-custhdr-17-invalid-sms-number-contains-invalid-digits-when-trying-to/00/27035
make up a 10 digit phone number.