If you also have a phone number listed in your Intuit Account settings (Intuit profile), then you must make sure you use a valid 10-digit USA phone number in both your Intuit Account settings and in your return. "Invalid SMS number" in the error message implies it has something to do with text messaging.
See if this FAQ helps:
https://ttlc.intuit.com/community/bugs-and-error-messages/help/why-am-i-getting-601errv-5-custhdr-17...
See the answer by TurboTax DawnC in the thread linked below, who says not to use a virtual number like Google Voice, Skype, etc. in the Intuit Account settings, at least not until after you successfully efile. She also says it may be possible to leave the phone number blank in the Intuit Account settings, and a couple of users said that worked for them. But if there is one there in the Account Settings, it has to be a valid USA phone number.
https://ttlc.intuit.com/community/taxes/discussion/re-i-try-efile-but-i-get-message-invalid-sms-numb...
Also see this other thread with many other out-of-country users with the same 601ERRV problem who were able to correct the error. If you have trouble, post there, and they can probably help you.
https://ttlc.intuit.com/community/taxes/discussion/my-federal-e-file-is-not-going-through-i-m-given-...
If the problem recurs, also see the ADDENDUM in my next comment below.
