Can you help taking and posting a small screenshot of the area on the admin portal where you can upload max 20 numbers. I will try to check from the platform API when I know where exactly it is on the admin portal.
Hey, thanks for the reply. Sure.
Under Phone System -> All Numbers -> the three dots next to Add number bring up a sub-menu where you can request to Add a substitute caller ID/ forwarded number (1st image). Clicking that link sends you to the Add substitute caller ID/forwarded number form (2nd image)
The form only allows for us to upload 20 DDI's at a time, its that I want to automate...
Thanks for the clarification.
It might be possible but you have to submit a dev support ticket with your account details so the support team can assess the requirement and help you.