Following your install and run demo for SMS
Full error: Error: Invalid resource owner credentials at Client.<anonymous> (/home/pi/sms-api-nodejs-demo/node_modules/ringcentral/src/http/Client.js:62:38)
Here's my .env....
# The Client ID of the app
RINGCENTRAL_CLIENT_ID= FhF_xxxxxxxxxxxx_FnxQ
# The Client Secret of the app
RINGCENTRAL_CLIENT_SECRET= JxI3xxxxxxxxxxxxxxx4_Fw
# The phone number used by the developer when logging into RingCentral. This number will be
# different in sandbox and production. This is also the sender of the message.
RINGCENTRAL_USERNAME= +12094250842
# The extension used by the developer when logging into RingCentral. This is only necessary if
# the username/sender above is the company phone number.
RINGCENTRAL_EXTENSION= 101
# The password used by the developer when logging into RingCentral
RINGCENTRAL_PASSWORD= Axxxxxxxxxxxx
# The phone number of the recipient
RECIPIENT_PHONE_NUMBER= 07801670386
# The base URL for call API calls
# Sandbox
RINGCENTRAL_SERVER_URL=https://platform.devtest.ringcentral.com
# Production
#RINGCENTRAL_SERVER_URL=https://platform.ringcentral.com
I'm new to RingCentral so will greatly appreciate your assist...
EJ