Screen Recording API 429 during JMeter load simulation

I’m curious as to why the Screen Recording API returns 429 Too Many Requests when JMeter hits 50 concurrent threads? We are testing recording start/stop endpoints on Genesys Cloud US1. The flow uses a simple trigger.

test_plan:
 threads: 50
 ramp_up: 10
 endpoint: /api/v2/recordings/screen

The limit seems very low for basic load validation.