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Hello, it may be due to the fast there is actually no default extention on the account, but the production credentials lists 101 as a default admin extention, but when trying to login with 101 extention returns invalid login cred error., However logging in with empty extention = '' when calling send sms returns error: The requested feature is not available. Please let me know thank you!

Could you please check with the back-end support team once related this account issue?

You can contact them through a help ticket and can ask for the internal details and the reason behind it. They can help you in investigating the issue.


Same problem for us, can you please answer these requests and help


If you could log in with an empty extension number (w/o extension number), it meant that the username (the phone number) is not the main company number. You can double check if the username and password you use are valid by login into your service web at https://service.ringcentral.com. If you log in as a super admin user, you can check your account users' settings.

The username and password you use to login the service web will be the username and password you login your app.


Hi, you cannot send a text from toll free number.


Usually, main number in your account is a toll free number and results in this issue when switching to production from sandbox..


Use any other number from your account.


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