How do I fix the 400 Bad Request errors hitting the /api/v2/messaging/conversations endpoint every Tuesday at 09:00 PT? The external CRM platform keeps failing when it tries to push the inbound WhatsApp messages into the digital queue. The sync job just stops working and drops about forty messages into the void before the timeout hits. Agent metrics show a sharp drop in first contact resolution during that window. The dashboard just shows the queue depth spiking without any active handles.
The vendor claims the payload structure matches the Genesys Cloud v2.12.4 specification, but the system keeps rejecting it anyway. The error log points to a missing required field in the routing rules, even though the Architect flow named Digital_Inbound_WA_Route has the exact same parameters as last month. Nothing changed on the flow side. The supervisors have to manually reassign those dropped chats to keep the SLA above eighty percent. It’s wasting a lot of coaching time just to explain why the automation broke again.
The integration uses the standard OAuth2 client credentials flow, and the token refresh happens without issues. The problem only appears when the message type is set to inbound_whatsapp. Switching to inbound_webchat works perfectly fine. The external team already tried clearing the cache and restarting the connector service. The response body returns a 400 status with a malformed_request error code. The queue assignment rules in the supervisor view are doing jack all while the sync fails. The flow still shows the old routing logic. The API documentation says the endpoint requires a specific channel_id parameter that the vendor is supposedly sending. The actual payload just gets rejected at the gateway level. The system logs show the request hitting the load balancer but never reaching the flow execution engine. The timeout threshold is set to thirty seconds. The vendor keeps asking for more access rights. The dashboard just keeps showing red status indicators and the error log stops updating after the initial handshake.