WFM API 429s during JMeter bulk scheduling test

Genesys Cloud WFM
1

Looking for advice on handling rate limits when pushing schedule data via the Genesys Cloud WFM API. The environment is Singapore, and I am using JMeter to simulate 50 concurrent updates to the PUT /api/v2/wfm/schedules endpoint.

  1. Set up JMeter with 50 threads looping every 2 seconds.
  2. Send a minimal schedule payload with valid resource IDs.
  3. Observe immediate 429 Too Many Requests responses after the first 10 calls.

Is there a specific header or retry logic I am missing for WFM endpoints?

2

What’s happening here is that the WFM API has strict burst limits, not just sustained throughput caps. Try adding a constant timer in JMeter to space out requests by at least 200ms per thread to stay under the 500 requests per minute threshold for that endpoint.