WFM Quality API 429s at 100 concurrent evaluations US1

Just noticed that the WFM Quality API returns 429 Too Many Requests when simulating bulk evaluation submissions. Environment is US1. Using JMeter 5.6 with SDK 2.3.0. Targeting /api/v2/wfm/quality/evaluations. The rate limit seems aggressive for batch processing. Steps to reproduce: 1. Configure JMeter thread group for 100 concurrent users. 2. Send POST requests to create evaluations. 3. Observe 429 errors after 10 requests. Is there a specific header or delay required?