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

# Idempotency

Some requests require an `Idempotency-Key` to ensure that operations are not accidentally executed multiple times. The key should be unique for each request, preventing duplicate processing and maintaining data integrity.

## How It Works

When you make a request that requires `Idempotency-Key`, you must include a header with a unique value, such as a UUID (Universally Unique Identifier).

<CodeGroup>
  ```bash bash theme={null}
  curl -X 'POST' 'https://sandbox-api.borderless.xyz/v1/withdrawals' \
    -H "Idempotency-Key: 8f14e45f-e6c3-4f7e-bd56-1b9a2e46f1d6"
  ```
</CodeGroup>

## Generating a Unique Idempotancy Key

You can generate a unique UUID for your key using various programming libraries or online tools or using the online tool: [Generate UUID](https://www.uuidgenerator.net/)

<Info>
  If you have any questions, please don't hesitate to reach out to us via [email](mailto:support@borderless.xyz) or slack.
</Info>