API error · HTTP 503

`service_unavailable`

Service unavailable

HTTP status	503 Service Unavailable
`code`	`service_unavailable`
`title`	Service unavailable
Retry?	Yes, after `Retry-After`

What it means

A service WALT depends on, such as document storage or the address lookup, is temporarily unavailable.

What to do

Retry after Retry-After, with backoff and the same Idempotency-Key (§12.4).

Example response

Branch on code, never on title or detail. detail varies; quote request_id to support.

HTTP

HTTP/1.1 503 Service Unavailable
Content-Type: application/problem+json

{
  "type": "https://www.underwritinguk.ai/developers/errors/service_unavailable",
  "title": "Service unavailable",
  "status": 503,
  "code": "service_unavailable",
  "detail": "Service unavailable.",
  "request_id": "7b0b1e5c-2f7e-4a52-9a43-5b0d0f0e9d11"
}

All error codes · Error catalogue in the integration guide (§15) · Error handling and retries (§12.4)