Is it possible to configure the outbound campaign API to handle higher burst throughput without hitting 429 Too Many Requests errors during initial ramp-up phases? I am currently stress-testing a Genesys Cloud outbound dialing setup in the ap-southeast-1 region using JMeter 5.6.2 to simulate a sudden spike in agent availability and dial attempts. The test plan targets the POST /api/v2/outbound/campaigns/{campaignId}/preview endpoint to initiate preview calls, scaling up to 50 concurrent threads over a 30-second period. The environment is running Genesys Cloud Platform version 2024-11. The error response consistently returns a 429 status code with the message “Rate limit exceeded for outbound dialing actions” after approximately 12 successful requests. The JMeter logs show that the WebSocket connections remain stable, but the REST API calls for initiating the dial attempts are being throttled aggressively. I have verified that the OAuth tokens are valid and the user role assigned to the test account has full permissions for outbound:campaign:manage. The issue appears to be specific to the burst capacity of the API rather than the overall daily quota, as the same test runs successfully when the ramp-up period is extended to 5 minutes. I am looking for any undocumented headers or configuration options in the Architect flow or API client that might allow for a higher burst limit, or if there is a specific endpoint for checking current rate limit status before initiating the dial sequence. The current setup uses the default retry logic in JMeter, which is causing significant test duration inflation due to the 429 retries.
The goal is to validate the system’s resilience under peak load conditions that mimic a large-scale BPO shift start in the Asia/Singapore timezone. I have reviewed the standard documentation on API rate limiting, which suggests implementing exponential backoff, but this does not accurately reflect the real-world scenario where agents expect immediate dial attempts. The test environment is isolated with no other active campaigns running to eliminate external interference. Any insights on how to properly structure the JMeter thread group to align with Genesys Cloud’s expected burst patterns, or if there is a way to request a temporary rate limit increase for load testing purposes, would be greatly appreciated. I am also open to suggestions on alternative endpoints or methods for simulating high-volume outbound dialing that might be more resilient to rate limiting, such as using the predictive dialer API directly if that allows for higher concurrency. The current approach is blocking our performance validation timeline, so any workaround or best practice for handling these limits during testing would be helpful.