WEM API 429 errors during load test ramp-up

Is it possible to configure higher throughput limits for WEM endpoints during automated load testing? Running JMeter 5.6.2 from Singapore to simulate bulk agent login events. Target is POST /api/v2/wem/agents/{agent_id}/login. Hitting 429 Too Many Requests immediately after ramping to 50 threads.

“Standard rate limits apply to all API calls. Contact support for temporary increases during migration.”

Does this apply to load validation? Current config uses OAuth2 bearer tokens with fixed concurrency.