# service_unavailable

Service unavailable: HTTP 503.

HTTP 503 · Service unavailable

## Meaning
The service is overloaded, in maintenance or can't reach a dependency it needs.

## Fix
Retry after the wait the Retry-After header gives.

## Retry
The same call can succeed later.

## Returned by
- [`GET /v1/status`](/reference/status#get-status)
- [`GET /v1/reference`](/reference/reference#list-reference)
- [`GET /v1/reference/{topic_id}`](/reference/reference#get-reference)
- [`POST /v1/wire/tickets`](/reference/wire#get-wire-ticket)
- [`GET /v1/stream/{topic}`](/reference/wire#stream-topic)
- [`POST /v1/answers`](/reference/answers#create-answer)

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Generated from registry/generated/problems.json

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