"If you indicate a company number (not direct extension number) as your "from" number, you must be logged in as a company operator to be allowed to send SMS from this number. By default, main system administrator extension is defined as a company operator, but it can be changed in RingCentral Service Web UI . "

See the reference answer: https://community.ringcentral.com/questions/1557/send-sms-error-msg-304.html?page=2&pageSize=10&sort=oldest

Thanks Anirban, we already had found this reference, and we are logged in as our main company operator extension that is defined in our IVR settings. We have this changed from the default ext 0, to ext 222 AND we are using Multilevel-IVR, so I am not sure if either of these are causing an issue. But we are logging in as 222 and are able to authenticate and obtain incoming fax and sms messages for our main number, we just cannot send.

Check your IVR general setting to see which extension was selected to receives all calls and messages by default for the main company number. Login your app with that extension then you will be able to send SMS from the main company number.

I was referred to this thread by customer service when I was told that there still is no current way to send an automated SMS from a company’s main number, only from an individual personal number. I was originally trying to do this via a Hubspot workflow and I see that this thread seems to be about the API. I am able and willing to send this SMS via code that I write, but I gather from this response that it is still not possible to send SMS from the “main” number via your SMS API.

The note at the bottom of this page seems to suggest that I could somehow assign our main company number to a fake user, and then I would be able to use that user’s credentials to send SMS? Am I reading that correctly? Could I also have incoming calls to that number routed to a call queue like I have with our current setup, and also be able to send SMS from that number?

Check my previous answer above to learn how to assign a Fax/SMS recipient for main company/company numbers. Then authenticate your app with the assigned user to send SMS. That is all you need to setup.

The note in the dev guide page you mention is not related to what you asked. It just means that only the user extension who owns the number (or assigned to be the SMS recipient) can send/receive SMS messages from that number.

We have our main number being routed to a call queue, not an individual user, so I don’t have the option to select an operator for that number. Is there a way I can have the number routed to a specific user but somehow set that user to forward calls to the call queue, enabling me to send SMS from that number but still have it ring to a call queue?

Now I don’t understand your account settings. If a main company phone number is set to route incoming call to a call queue, only the voice call is routed. Not the SMS. You should still see the Fax/SMS recipient setting at the auto-receptionist’s call handling settings view.

I noticed that the screenshot above is the old setting. So see the screenshot below

For SMS sent by humans, we use Beetexting from that number and that works fine. But I’m trying to set up automated SMS messages coming from that number via a Hubspot workflow. (Though I am a developer and am willing and able to use the API if it is possible to send automated SMS from that number via the API, but I don’t see how to do that either: it seems like the API has this same limitation that calls to send SMS have to be authenticated to a specific RC user and then the sent messages come from their personal extension.)

But to finish showing you what I’ve done, on the screen you mentioned I am set as both the Fax/SMS recipient and the Operator. But when I set up my Hubspot workflow to send an SMS message, it always comes from my extension’s direct number, not from the main company number, and there’s nowhere in the Hubspot workflow step to specify which outbound number you want to use:

For SMS sent by humans, we use Beetexting from that number and that works fine. But I’m trying to set up automated SMS messages coming from that number via a Hubspot workflow. (Though I am a developer and am willing and able to use the API if it is possible to send automated SMS from that number via the API, but I don’t see how to do that either: it seems like the API has this same limitation that calls to send SMS have to be authenticated to a specific RC user and then the sent messages come from their personal extension.)

But to finish showing you what I’ve done, on the screen you mentioned I am set as both the Fax/SMS recipient and the Operator. But when I set up my Hubspot workflow to send an SMS message, it always comes from my extension’s direct number, not from the main company number, and there’s nowhere in the Hubspot workflow step to specify which outbound number you want to use:

 

 

 

Who implement that HubSpot SMS workflow? Is the user who login that HubSpot workflow app the assigned extension who is the Fax/SMS recipient in the settings?

If you implement the workflow by yourself, then read the dev guide and see the sample example of how to detect a user’s phone numbers with the “SMSSender” feature, then chose the number to send.

https://developers.ringcentral.com/guide/messaging/sms/sending-sms

https://developers.ringcentral.com/guide/messaging/quick-start