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Customization
Troubleshooting
- Embedded checkouts in WooCommerce
- Checkout blocks in WooCommerce
- Error codes
- Compatible plugins and themes
- Known compatibility issues
- Files to exclude from optimization
- Shipping Methods in iframe
- FAQ
- Optimizing your checkout when using an Iframe-based checkout
- Callbacks
- Troubleshooting the checkout flow
- Troubleshooting the Pay for order/Hosted Payment Page flow
- Troubleshooting WooCommerce Subscriptions and KCO
- Kustom Developer logs
- Pending payment orders and held stock
Additional related plugins
Kustom Developer logs
As Klarna Checkout transitions to Kustom Checkout, please note that parts of this documentation are still being updated. You may come across references to Klarna, outdated screenshots, or broken links.
We’re working continuously to revise all content, and we appreciate your patience during this process.
The Kustom Developer logs allows you to inspect the technical communication (API calls) between your back office and Kustom, and vice versa in some cases, for the last 7 days.
Log in to your Kustom Portal and click the Developer logs in the menu. Here you can find all related Kustom logs that’s related to a specific Kustom order id.

For more info regarding the Kustom Developer logs you can read the official Kustom documentation.