Messaging API 429 during JMeter load test

Does anyone know how to handle rate limits on messaging endpoints? Running JMeter 5.6.2 from Singapore. Targeting /api/v2/conversations. Simulating 100 concurrent requests. Hitting 429 immediately. Need throughput limits.

  • Endpoint: /api/v2/conversations
  • Tool: JMeter 5.6.2
  • Location: Asia/Singapore