Product: Programmable Chat
This Conversation does not have an assigned Messaging Service, therefore cannot accept non-chat participants.
- You may be attempting to add a non-Chat participant (e.g. on SMS) to a channel from Programmable Chat. As Chat precedes the Conversations product, these channels first need to be provided a Messaging Service before they can access SMS, WhatsApp, or other channels.
- Update the Conversation with any existing Messaging Service SID on your account. After that, you will be able to add non-Chat participants and continue the conversation with them involved.