Outbound Campaign Data Action 403 on ServiceNow Integration

Having some config trouble here…

Attempting to create a ServiceNow incident via a Data Action triggered by an Outbound Campaign contact disposition update. The flow executes, but the HTTP POST to ServiceNow returns a 403 Forbidden. This mirrors our previous AI Bot issues. Using Genesys Cloud 2023-12.0 and ServiceNow Washington DC. OAuth tokens are valid. Here is the payload:

{
 "short_description": "Outbound call failed",
 "caller_id": "[email protected]"
}

Any insights on scope permissions?