> ## Knowledge Base Index > Fetch the complete knowledge base index at: https://help.promoparty.app/sitemap.xml > Use this file to discover available pages before exploring further. > Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash). # How different discounts combine Promo Party Pro makes your gift free with one automatic discount in Shopify. By default, that discount does **not** combine with other discounts. This article explains how to let customers use a discount code and still get their free gift. ${youtube}[How to Combine Shopify Discount Codes Using Promo Party Pro](dn1oG2EfuRE) --- ## How the free gift discount works * Promo Party Pro creates **one** automatic discount in your Shopify admin under **Discounts**. All of your campaigns share it. * It is a **product discount**. It takes 100% off one unit of each gift that Promo Party Pro added to the cart. * It updates each time you save, create, or delete a campaign. Don't edit or delete this discount in Shopify. Make all changes in Promo Party Pro. --- ## Combinations are off by default A new campaign does not combine with any other discount. If a customer enters a discount code that doesn't combine, Shopify applies only one of the two discounts. When that is the code, the gift is charged at full price. --- ## Turning on combinations 1. Open your campaign in Promo Party Pro. 2. Find the **Discount Combinations** card, below **Pop-up Settings**. 3. Check the types your customers use: * **Combine with order discounts**: codes for a percentage or amount off the whole order, like `SAVE10` * **Combine with product discounts**: discounts on specific products or collections * **Combine with shipping discounts**: free or reduced shipping 4. Save the campaign. ### The discount code needs to allow it too Combining works only when **both** discounts allow it. In your Shopify admin, go to **Discounts**, open the customer's code, and under **Combinations** turn on **Product discounts**. If either side doesn't allow combining, only one discount applies. --- ## The setting applies to all your campaigns Because all campaigns share one discount, a combination you turn on in **any** running campaign applies to every campaign's gift. For example, if Campaign A allows order discounts and Campaign B doesn't, a `SAVE10` code still combines with Campaign B's gift. To keep codes from combining with any gift, uncheck the box in every campaign. --- ## Common setups ### Free gift plus a 10% off code * Campaign: **Combine with order discounts** checked * Code `SAVE10`: combines with **Product discounts** * Result: the customer gets 10% off and the gift stays free ### Free gift plus free shipping * Campaign: **Combine with shipping discounts** checked * Free shipping discount: combines with **Product discounts** * Result: free shipping and a free gift ### Gift only (default) * All boxes unchecked * Result: a customer who enters a code gets either the code or the gift, not both --- ## Testing your setup Test on your storefront in a private (incognito) window. Add items until the gift appears, go to checkout, and enter the code. The gift line should stay at $0. Draft orders created in the Shopify admin are not a reliable test. The gift is only free when Promo Party Pro adds it to the cart on your storefront. For the full checklist, see [Testing your promotion](https://help.promoparty.app/en/article/testing-your-promotion-1lv4da8/). --- ## Troubleshooting ### "Discount couldn't be used with your existing discounts" The code and the gift discount don't combine. Check the boxes in your campaign, and turn on **Product discounts** combinations on the code in Shopify. ### The gift is charged after a code is applied Same cause. Check both sides as described above. If combinations are set and the gift still isn't free, see the [Quick Troubleshooting Guide](https://help.promoparty.app/en/article/quick-troubleshooting-guide-1vuw2jn/). ### Can a discount code unlock the gift? Not yet. A customer can't trigger a gift by entering a code. See [Things Promo Party Pro can't do yet](https://help.promoparty.app/en/article/things-promo-party-pro-cant-do-yet-cgwusx/) for workarounds. --- ## Still stuck? Open Promo Party Pro and click the chat icon. Send us the code you're testing and your campaign name, and we'll take a look.