---
title: Discount Function support for rejecting discount codes - Shopify developer changelog
description: Shopify’s developer changelog documents all changes to Shopify’s platform. Find the latest news and learn about new platform opportunities.
source_url:
  html: https://shopify.dev/changelog/discount-rejection-support-for-discount-functions
  md: https://shopify.dev/changelog/discount-rejection-support-for-discount-functions.md
---

[Back to Developer changelog](https://shopify.dev/changelog)

December 17, 2025

Tags:

* Functions
* 2026-01

# Discount Function support for rejecting discount codes

The [`Discount Function API`](https://shopify.dev/docs/api/functions/reference/discount) now supports discount code rejection, allowing apps to conditionally reject discount codes with a custom message.

With discount rejection for the Discount Function API, merchants can:

* Prevent double discounting on sale prices
* Manage fine-grained combinations of discount codes
* Disqualify certain products from discounts

For more information on discount rejections, visit the [tutorial](https://shopify.dev/docs/apps/build/discounts/discount-rejections?extension=rust).