> ## 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.

# underpaid

> Less arrived than the intent required.

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

  <Card title="Typical status" icon="hashtag">
    200
  </Card>
</CardGroup>

## What it means

Not necessarily a failure. What happens next is your application's configured underpayment policy.

## Common causes

* The payer sent less than the quoted amount.
* A network fee was deducted from the sent amount by the sending wallet or exchange.

## How to resolve

Depends on your policy: `credit_partial` moves the intent to `partially_settled` and credits what arrived, `hold` waits for a top up until expiry, and `refund` returns what arrived.

<Note>
  Exchange withdrawals frequently deduct their fee from the amount sent, which is the most common cause.
</Note>

## Example response

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