Analytics API: Aggregates query returns empty result for custom interval

NICE CXone API & Integrations
1

I’m building a custom interval report to track APM latency spikes correlated with call volume. The GET /api/v2/analytics/conversations/summary call returns a 200 OK, but the entities array is consistently empty. The time range covers the last hour. The JSON payload looks standard.

{
 "groupBy": ["queueId"],
 "interval": "PT1H",
 "filter": {
 "from": "2023-10-27T14:00:00.000Z",
 "to": "2023-10-27T15:00:00.000Z"
 }
}

The SDK is Python. No errors thrown. Just blank data.