You are receiving a 503 error response due to some circumstances outside of your control. For example, a system level rate limit was exceeded which affects the cumulative account requests, even though you might be within the limits for your account.

"retryAfter": 10,
"instance": "/mtls-edge-truststore/error-types/global-rate-limit-exceeded?traceId=-8849688147311234963",
"detail": "Server temporarily unavailable. Try again in 10 seconds.",
"type": "/mtls-edge-truststore/error-types/global-rate-limit-exceeded",
"title": "Global Limit Exceeded",
"status": 503