# service_unavailable

> Noptcha API error service_unavailable (HTTP 503): what it means and what to do.

Source: https://noptcha.com/docs/errors/service_unavailable/

HTTP **503**, `application/problem+json`. When: no capacity or a dependency is down.

## What to do

No solver could take the task right now, or a dependency is down. Nothing was created or charged. Retry after `Retry-After` seconds.

See all codes on [Errors](https://noptcha.com/docs/errors.md). Include the `request_id` when you contact support.