> ## 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.

# refund_undeliverable

> A refund was attempted and could not be delivered.

<CardGroup cols={2}>
  <Card title="Retryable" icon="rotate">
    No
  </Card>

  <Card title="Typical status" icon="hashtag">
    409
  </Card>
</CardGroup>

## What it means

This is the one state that always needs a human. The intent is in `refund_failed` and the funds are held, not lost.

## Common causes

* The payer is an exchange deposit address that cannot receive a refund.
* No refund endpoint was collected and the source is not reliably refundable.
* The refund destination has since become invalid.

## How to resolve

Collect a valid refund endpoint from the payer and retry the refund. Our checkout collects one before payment on rails where the payer is not reliably refundable, which prevents most occurrences.

<Note>
  Funds in `refund_failed` are held on the ledger against a named liability. They are never written off.
</Note>

## Example response

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