We have integrated SMS API with Zoho CRM and have an approved app in the app store: https://www.ringcentral.com/apps/zoho-crm-ringcentral-sms-texting-extension
It works great, but we are seeing issues with certain accounts. We need to be able to filter out numbers that cannot send SMS. We used to filter for SMS Enabled type, but we were told other number can text also that have different types. This makes it very confusing as now we list all numbers even the ones can not text. As a result, customers are getting a number of error messages. We also not sure why some users can not text, they get the error:
In order to call this API endpoint for another extension, user needs to have [OutboundSMS] permission granted with extended scope
Can you point me in the right direction? Our app is getting more popular, but we need to perfect it.
