I do have correct ClientID, ClientSecret and JWT.
Authorize client did work and I am getting Token,but when try to send SMS, I am getting error 403 'Forbidden'
We have account with ringcentral and it's paid account.
Sandbox phone numbers are no longer SMS enabled. You have to submit a dev support ticket to get help. The support team can link your sandbox numbers to your production TCR and campaign registration.
If you want to skip testing SMS on sandbox, let me know the app client Id. I can help graduate your app to the production and you can try SMS directly on your production number.
Okay, I did create Application "ATekFirstApp" for production environment.
Client ID is WvFfq07lPLYcTMOLVTbt71 in Sandbox environment and N/A for production environment.
I am going to use JWT Authorization.
Are you sure that this must be a public app with personal JWT? Normally it should be a private app.
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