> ## Documentation Index
> Fetch the complete documentation index at: https://docs.useroutr.com/llms.txt
> Use this file to discover all available pages before exploring further.

# rail_unavailable

> The requested rail is not currently accepting traffic in this direction.

<CardGroup cols={2}>
  <Card title="Retryable" icon="rotate">
    Yes
  </Card>

  <Card title="Typical status" icon="hashtag">
    503
  </Card>
</CardGroup>

## What it means

Rails declare which directions they support, and some support only one. A rail can also be taken out of service temporarily for an upstream incident.

## Common causes

* The rail is deposit only and was requested as a destination, or the reverse.
* The rail is paused for an upstream incident.
* The rail is not enabled for your application.

## How to resolve

Check `GET /rails` for the current `directions` array on that rail. If the rail should be enabled for your application and is not, contact support.

## Example response

```json theme={null}
{
  "error": {
    "code": "rail_unavailable",
    "message": "...",
    "type": "...",
    "retryable": true,
    "docs_url": "https://docs.useroutr.com/errors/rail_unavailable",
    "request_id": "req_..."
  }
}
```