> For the complete documentation index, see [llms.txt](https://docs.globo.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.globo.io/pre-order/faqs/why-is-only-one-pre-order-product-added-to-the-cart.md).

# Why Is only one pre-order product added to the cart?

If you're only able to add **one pre-order product** to the cart, it could be due to the following reason:

* **Old Pre-order Model with Discount or Partial Payment Enabled**\
  When using the old pre-order model **combined with Discount or Partial Payment features**, the system is limited to processing **only one pre-order product at a time**.

Additionally:

* Clicking the **Pre-order** button in this setup will **redirect customers directly to the checkout page**, bypassing the cart. This prevents multiple pre-order products from being added together.

***

> ✅ **Tip:** If you want customers to add multiple pre-order items to the cart, consider switching to the **new pre-order model** without enabling discount/partial payment features or contact support for a solution

You can understand more about how the new model works from [here](/pre-order/pre-order/shopify-selling-plan-and-legacy-model.md). 

<figure><img src="/files/d2nVhdAWCB5KULI5mVIY" alt=""><figcaption></figcaption></figure>

#### 📩 Need Help?

If you encounter any difficulties during setup, please don’t hesitate to reach out via **chat** or email us at **<contact@globo.io>**. We're always here to help!