Messaging Channel API 429 Errors During JMeter Load Test

Why does the Messaging Channel API returns 429 Too Many Requests when scaling concurrent sessions? Running JMeter 5.6 against Genesys Cloud US1. The Genesys Docs state a limit of 100 requests per second. We hit this wall at 50 threads. The error appears on POST /api/v2/conversations/messaging. Is there a way to bypass this for load testing?