I have multiple phone numbers in inventory. I want to be able to assign a phone number to an extension I created.
I tried this PATCH command, but it keeps saying the extensionID number is not found: https://developers.ringcentral.com/api-reference/Phone-Numbers/assignPhoneNumberV2
I even tried to do a get of the extension number I want to use, using this GET commad: https://developers.ringcentral.com/api-reference/Phone-Numbers/listExtensionPhoneNumbers
But it still can't find the extension number, it can only show me the results of all the extensions I have in my ringcentral account if I uses the tilde "~"
Is it possible to assign phone numbers to an user's extension? I want to be able to assign a phone number to an extension I created, and have that number be the primary fax and fax only number type.