Analytics API 500 error during high-concurrency JMeter load test

Could someone clarify why the /api/v2/analytics/conversations/details/query endpoint returns a 500 Internal Server Error when pushing 50 concurrent threads through JMeter 5.6.2?

Background

Running load tests from Asia/Singapore using Genesys Cloud Platform API. Simulating peak reporting queries.

Issue

Request fails with HTTP 500 after 15 seconds of sustained load. Standard rate limit headers are absent.

Troubleshooting

  • Verified valid OAuth2 token.
  • Reduced thread count to 10; requests succeed immediately.