invalid_request (value: "invalid_request")

unauthorized (value: "unauthorized")

payment_required (value: "payment_required")

insufficient_credits (value: "insufficient_credits")

insufficient_credits_to_send (value: "insufficient_credits_to_send")

forbidden (value: "forbidden")

upgrade_required (value: "upgrade_required")

account_suspended (value: "account_suspended")

not_found (value: "not_found")

method_not_allowed (value: "method_not_allowed")

conflict (value: "conflict")

gone (value: "gone")

request_too_large (value: "request_too_large")

unsupported_media_type (value: "unsupported_media_type")

validation_failed (value: "validation_failed")

invalid_data (value: "invalid_data")

rate_limited (value: "rate_limited")

daily_email_limit_reached (value: "daily_email_limit_reached")

internal_error (value: "internal_error")

bad_gateway (value: "bad_gateway")

service_unavailable (value: "service_unavailable")

upstream_timeout (value: "upstream_timeout")

polling_timeout (value: "polling_timeout")

idempotency_key_in_use (value: "idempotency_key_in_use")

idempotency_key_reused (value: "idempotency_key_reused")