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Concept
Checkout Validation
Platforms provide a version of this natively — Shopify calls it checkout validation, and its functions can refuse a checkout when a business rule is not met. The native check covers rules one store can state about itself. It does not cover the case where a second system also writes the price, the discount or the stock count, because each tool enforces only its own floor and none of them sees the others. The bad order arrives through that gap.
How do I block a checkout that breaks my own rules?
Platforms provide a version of this natively — Shopify calls it checkout validation, and its functions can refuse a checkout when a business rule is not met. The native check covers rules one store can state about itself. It does not cover the case where a second system also writes the price, the discount or the stock count, because each tool enforces only its own floor and none of them sees the others. The bad order arrives through that gap.
2 patterns answer this
Margin floor at checkout
An order reaches checkout carrying stacked discounts or a drifted automated price.
10 executable policies
Prevent multi-channel overselling
The final unit of an item is sold on two channels within the same sync window.
5 executable policies
From this term to a governed action
- Margin floor at checkoutThe recurring action behind this term.
- Shopify Margin Floor GuardAn executable policy that implements it.
- Try to break it in the sandboxA real signed verdict, no account.
- Deploy on your surfaceAvailable on 9 platforms today.
- Verify the proof yourselfCheck the signature without trusting us.
- Start in Shadow ModeMeasure on your traffic before enforcing.
Where this fits
Decionis is the deterministic decision layer between intent and execution. This concept is one way in; the architecture behind it is the same in every case.