Conversational AI API 502 on BYOC Trunk Metadata

Anyone know why the Conversational AI analytics endpoint returns a 502 Bad Gateway error when querying session data for calls routed through our BYOC trunks in the APAC region? The standard PSTN routes work fine, but the BYOC metadata seems to trigger this specific failure during peak hours.

We are using the /api/v2/analytics/conversations/data endpoint with standard filters. The issue correlates with high SIP registration churn on our primary carrier. Is there a known limitation on metadata aggregation for BYOC trunks?