Genesys AI Bot to ServiceNow Data Action 500 Error on Intent Match

Genesys Cloud EU-West-2
ServiceNow London Instance (Tokyo Release)
Genesys Data Action v2.4
Architect Flow: Digital Channel Screen Pop

The bot triggers a Data Action upon intent match, but the ServiceNow endpoint returns 500 Internal Server Error despite valid JSON formatting in the webhook payload. Logs show the request reaches ServiceNow but fails authentication silently. Could someone explain why the OAuth token refresh fails specifically for bot-triggered events?