Need some help troubleshooting the correct API sequence for injecting proactive notifications into an existing Web Messaging session context. We are building a Terraform-managed integration that triggers external systems to send targeted offers to users who have previously engaged with our CXone Web Messaging channels.
The current workflow involves retrieving the session ID from our event store and attempting to push a message payload to the guest. I am using the CXone REST API endpoint /api/v2/conversations/messaging/sessions/{sessionId}/messages with a POST request. The JSON payload structure is as follows:
{
"type": "text",
"text": "Here is your personalized offer based on previous interaction.",
"from": {
"id": "system-bot-id"
}
}
However, the API consistently returns a 403 Forbidden error with the message “Insufficient permissions for proactive message injection.” I have verified that the OAuth client possesses the messaging:session:write scope.
Is there a specific header parameter or claim required to authorize proactive pushes against a closed or idle session? Alternatively, is the recommended approach to utilize the Guest API directly from the frontend, bypassing the server-side REST call entirely?
We prefer a server-side implementation to maintain audit trails within our Terraform-managed infrastructure. Please provide the exact HTTP method, required scopes, and any necessary JSON fields to successfully execute this operation without triggering security blocks.