How to Fix the “Checkout ID Not Found” Error

If you’re seeing the “Checkout ID Not Found” message on your Checkout page, it usually means the CartFlows step is not correctly linked to the page where the shortcode is placed.

This documentation explains when this error occurs and how to resolve it.

When This Happens

This error can happen in the following situations:

Case 1: Editing the Checkout Page in a Page Builder

You may see the error while editing your Checkout page inside a page builder. In editor mode, some WooCommerce functions may not be available, which prevents CartFlows from detecting the proper Checkout step.

Solution:

1. Exit the page builder and return to the WordPress dashboard.
2. Edit the checkout step in CartFlows > Funnels, select your funnel, and open the Checkout step.
3. Make sure at least one product is selected, or set the funnel to Test Mode if you’re just designing the layout.
4. Update the page, then visit the checkout page from the frontend.

Note: To see the checkout fields on the page, there must be at least one product assigned to the step or the funnel must be in Test Mode.

Refer to this guide for help: How to Use Test Mode

Case 2: Shortcode Placed on the Wrong Page

This error can also occur if the [cartflows_checkout] shortcode is placed on a regular WordPress page that isn’t connected to a CartFlows Checkout step.

Solution:

Only place the [cartflows_checkout] shortcode on a page that is assigned as a Checkout step within a CartFlows funnel.

Note: The [cartflows_checkout] shortcode does not work on upsell, downsell, opt-in, or thank you pages. It is intended for Checkout steps only. For more details, refer to this doc: Placing Shortcodes in the Right Places