GET /api/v2/analytics/conversations/details/query returns empty transcript text field

NICE CXone API & Integrations
1

I’m trying to pull the full voice-to-text transcript for a specific conversation using the Analytics API. The request hits GET /api/v2/analytics/conversations/details/query with the transcript field included in the query parameters, but the resulting JSON object has an empty transcript array. The call returns a 200 OK status, so it’s not an auth error. Here’s the query payload I’m sending:

{
 "select": ["transcript"],
 "where": [
 {
 "path": "conversationId",
 "operator": "equals",
 "value": "abc-123-def"
 }
 ]
}

Is there a specific setting in the Speech Analytics configuration that blocks this data from appearing in the API response? Or am I missing a header?