429 Too Many Requests on BYOC Trunk Provisioning API during ramp-up

Running a JMeter test to provision multiple BYOC trunks concurrently. Hitting 429 errors on PUT /api/v2/edge/byoc/trunks after ~20 requests/sec. Standard rate limits seem too low for bulk setup. Is there a way to increase the limit or should I implement a retry queue? Using standard OAuth2 client credentials. Need to validate setup throughput before go-live.