Hi, i have problem with sending SMS (sendbox account) (+16502420220)
I tried perform this action by UI
(https://developers.ringcentral.com/api-reference/SMS/createSMSMessage)
and by node js api call 
in both cases i got next error:
{ "errorCode": "FeatureNotAvailable",
"message": "The requested feature is not available",
"errors": [ { "errorCode": "MSG-242", "message": "The requested feature is not available" } ]}
I'm doing investigate for high level estimation for my clients. Main goal receiving (mms and sms) and reply (sms) . Please enable sending sms and receiving mms by web-hook
copy of:
https://community.ringcentral.com/questions/94721/msg-242-requested-feature-is-not-available.html
