Cart transform warning

Topic summary

A user encountered an error while using an app that implements Shopify’s Cart Transform API. The error message appeared as a warning notification (shown in an attached screenshot).

Recommended troubleshooting steps:

  • Contact the app developers directly, as they have access to detailed function logs
  • Share function run details and logs with the app’s development team for investigation
  • The error typically indicates the Cart Transform function is throwing exceptions during execution

Potential technical causes:

  • Missing error handling in the Cart Transform app
  • Failed cart transform operations not being logged properly
  • Invalid product IDs, prices, or transformation rules
  • Issues visible in console/network logs

Current status: The issue remains unresolved. The user needs to coordinate with their app provider to diagnose the root cause using Shopify’s function monitoring tools.

Summarized with AI on October 30. AI used: claude-sonnet-4-5-20250929.

I’m using an app with Cart Transform API and received this error. Can anyone tell me what it is and whether it has any impact?

@123344 , you can check this with the app developers who might be able to help you out here.

Usually this error only comes up if the function has been throwing errors. You’d need to share the logs with the app’s dev so that they can have this checked for you.

https://shopify.dev/docs/apps/build/functions/monitoring-and-errors#sharing-function-run-details

Best,

Hi @123344

There may be a Cart Transform API app that is causing this issue. We need to check possible scenarios:

  1. Add Error Handling in the Cart Transform App
  2. Ensure the app handles errors gracefully
  3. Log any failed cart transforms
  4. Validate all product IDs, prices, and rules before modifying the cart

Other solutions:

  1. Check the console/network logs for errors.

Let me know if you need further assistance in troubleshooting this issue, and community will be happy to help.

Regards,