Hi Team,
Note : The SMS API workes well with the from (phoneNumber) as used same in the MMS api.
We are working on to send the MMS using Ring Central API ( https://developers.ringcentral.com/api-reference/SMS/createMMS). We also implement the phone-number API (https://platform.devtest.ringcentral.com/restapi/v1.0/account/389784004/extension/389784004/phone-number)
response from phone-number API is given below -
In MMS API -
ERROR -