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E1702. Approval backend unreachable
Severity: ERROR. Class:
HITLBackendUnreachableError(subclass ofHostedBootstrapError).
What happened
The SDK could not POST to /api/approval-requests after the configured retry budget. Network error, DNS failure, backend down, or rate-limit.
Why it matters
Without a reachable backend, the approval request cannot be created. The SDK falls through to the original deny.
How to fix
Check api.controlzero.ai from your machine: curl -sI https://api.controlzero.ai/healthz. If reachable, the issue is transient; the SDK will retry on the next call. If unreachable, check your network / proxy / VPN.
Catching this error
except HostedBootstrapError catches this. The fail-closed behavior matches other hosted-bootstrap failures (bundle fetch, enrollment).
See also
- Approval Workflow. The parent concept
- SDK: Approval callback. The
request_approval+waitAPI - Errors index