> For the complete documentation index, see [llms.txt](https://wiki.theshop.dev/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://wiki.theshop.dev/docs/frontstore/basic-selling-flow/shopping-cart-basket/voucher-discount-code.md).

# 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.