Error: Feature [DomesticCalls] is not available for current extension

Hello. I have an application that uses JWT token auth.
Our app is trying to make an API call using Ring-Out

https://platform.ringcentral.com/restapi/v1.0/account/~/extension/~/ring-out

But I am receiving an error:

error: Error: Feature [DomesticCalls] is not available for current extension
status: 403

Could you please help what could be the reason?

The same scenario works well for the JWT token for the "admin" account. I assume that my account does not have some permission, but I don't know which one and where I set it.

The regular calls from the ring-central application work fine for my account as well.

Thanks.