# Prevent Duplicate Refunds

You can now include an `idempotency_id` when creating a Refund or Reversal. Including this unique identifier with your refund API requests helps ensure that even if duplicate API requests for the same refund are sent, the refund is only initiated once. This is key, because sometimes an issue like an interruption with your network connection or problem with your server can cause an API request for the same refund to get submitted multiple times.

For more details on the `idempotency_id`, see [Idempotent Requests](/api/section/idempotent-requests).