cart-checkout-validation did not run

Shopify Apps

Topic summary

A Shopify partner store encountered an issue where a cart-checkout-validation app failed to execute for an order containing more than 20 items.

Error Details:

  • Timeline shows a validation error (visible in screenshot)
  • Clicking “Notify developer” redirects to checkout rules
  • The cart-checkout-validation settings appear configured, but abandoned checkouts section is empty

Key Questions:

  • Why did the cart validation not run for this order?
  • Should the order be cancelled?

Status: The issue remains unresolved with no responses yet. The developer is seeking guidance on both troubleshooting the validation failure and determining appropriate next steps for handling the affected order.

Summarized with AI on October 27. AI used: claude-sonnet-4-5-20250929.
1

My partner store has installed an app integrated with cart-checkout-validation

But have an order have more than 20 items and in the timeline, I saw this error

nhtbao101_0-1750228753130.png
nhtbao101_0-1750228753130.png1208×218 29.1 KB

And I clicked the button Notify developer and it directed me to the checkout rule,

nhtbao101_1-1750228896337.png
nhtbao101_1-1750228896337.png1408×486 52.6 KB

I click the the cart-checkout-validation and that is my setting rule. But the abandoned checkouts is empty right now.

nhtbao101_2-1750228961679.png
nhtbao101_2-1750228961679.png1496×674 59.2 KB

What I can do in this case, I need cancel this order?
Why the cart validation not run?