Configuration is broken for some reason…
Running a load test against a custom IVR flow in Genesys Cloud US1. The goal is to validate capacity before peak season. The flow uses a simple “Transfer to Queue” action.
Environment:
Genesys Cloud US1
JMeter 5.6
Endpoint: /api/v2/architect/flows/{flowId}/run
Config: 500 concurrent threads, ramp-up 30s
Error observed:
503 Service Unavailable
Message: “The service is temporarily unavailable. Please try again later.”
This happens almost immediately after the ramp-up completes. The error rate spikes to 80% when concurrency hits 450 threads. Lowering to 200 threads works fine with 0% errors.
I checked the system status page, no outages reported. The flow itself is simple, no external API calls, just routing logic.
Is there a hard limit on concurrent flow executions for our tier? The documentation mentions rate limits on REST APIs, but this looks like a capacity issue within the Architect engine itself. How do we plan for this? Should we increase the number of flow instances or is this a platform-wide limit?