500 Error on BYOC Edge POST for custom metrics

Voice & Telephony
1

Stuck on 500 Internal Server Error when pushing analytics report definitions to a BYOC edge in AU-1. Provider genesyscloud v1.68.4. The custom metric exists and works on public edge. Payload validates locally. API endpoint POST /api/v2/analytics/reportdefinitions fails.

{
 "name": "EdgeCustomMetric",
 "description": "Test",
 "objectType": "custom_metric",
 "customMetric": "cust_latency"
}

Any ideas?