# Voucher (discount code)

The voucher (discount code) feature is a promotional tool that allows customers to enter a code during the checkout in their Shopping cart to receive a discount on their purchase.

When adding a voucher to the Shopping cart, check if it's available.

[This API call](https://demo.theshop.dev/api-documentation/v1#/voucher/c1d082164d07f7e24dbb0fa6a79a8846) checks if a voucher is available.