Every error of the public API is an RFC 7807 Problem Details document whose type is one of these URLs. Match on the slug.
bad-gateway — Bad Gatewaybad-request — Bad Requestconflict — Conflicterror — Errorforbidden — Forbiddenidempotency-conflict — Idempotency conflictidempotency-key-in-flight — Idempotency-Key in flightidempotency-key-required — Idempotency-Key requiredidempotency-key-too-long — Idempotency-Key too longinternal-error — Internal Server Errornot-found — Not Foundpayment-required — Payment Requiredquota-exceeded — Quota exceededrate-limit-exceeded — Rate limit exceededrate-limited — Too Many Requestsservice-unavailable — Service Unavailableunauthorized — Unauthorizedunprocessable-entity — Unprocessable Entityunsupported-vbp-version — Unsupported VBP version