How come this setting causes immediate 403 Forbidden errors when scaling up concurrent requests in my JMeter script? I am targeting the /api/v2/recordings endpoint from ap-southeast-1 to validate throughput. The service account has full admin rights, but the error spikes once I hit 50 threads.
HTTP/1.1 403 Forbidden: Access denied for resource type: recording
Is there a specific WebSocket limit or rate cap I am missing here?
Check your resource access policies and role permissions for the service account. Even with full admin rights, Genesys Cloud enforces strict RBAC for recording resources. If the account lacks explicit permission for view:recording or download:recording, the API returns 403 immediately. This often happens when scaling up because initial requests might cache tokens, but subsequent concurrent calls validate permissions more strictly against the specific resource type. Verify the role assignment in the Admin portal under Security > Roles.
Also, review the rate limiting headers in your JMeter response sampler. A 403 can sometimes mask a 429 if the error handling in your test script is generic. The /api/v2/recordings endpoint has specific throughput caps per tenant. If you hit 50 threads, you likely exceeded the request quota. Add a Constant Throughput Timer in JMeter to space out requests. Aim for 10-15 requests per second initially. Monitor the Retry-After header. Adjust the ramp-up time to allow the system to process previous requests before sending new ones.