Looking for advice on HTTP 429 Too Many Requests when scaling outbound dialing. Running JMeter with 100 concurrent threads hitting the /api/v2/outbound/campaigns endpoint. Environment is Genesys Cloud US-East. The script fails immediately after 10 calls are queued. I suspect API rate limits are too strict for this load pattern. Is there a specific retry header or backoff strategy required for bulk campaign creation during performance testing?
I’d recommend looking at at the Retry-After header in the 429 response. The platform enforces strict rate limits on outbound endpoints, especially in US-East.
Parse that header in your JMeter listener. A simple exponential backoff script usually stabilizes the throughput. Hardcoding retries often triggers IP bans.