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CheckoutGuard Block Mixed Cart logo

CheckoutGuard Block Mixed Cart

Develop by Shopify

$3.99-$9.99

/ Month
14 Days Free Trial

Prevent invalid orders by blocking incompatible items at checkout.

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About CheckoutGuard Block Mixed Cart

Launched Jan 11, 2026

Categories

Cart customization

Built by Shopify

Address

Rua Gaspar Rebelo, nº 13, Edifício Multimedia, Piso 1, Seia, PT-09, 6270, PT

Website Support Portal Privacy policy Tutorial FAQ Document
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Description

Stop mixed carts. Prevent customers from combining pre-orders with in-stock or incompatible items.

Checkout Guard helps merchants prevent invalid orders before they reach checkout. It allows merchants to define rules that block carts with incompatible items, such as mixed pre-orders and in-stock products, conflicting shipping types, or fulfillment restrictions. Rules are enforced at checkout so invalid orders are stopped before payment. This helps reduce fulfillment errors, refunds, and manual order fixes while giving merchants clear visibility into blocked checkouts.

Checkout Guard helps merchants prevent invalid orders before they reach checkout. It allows merchants to define rules that block carts with incompatible items, such as mixed pre-orders and in-stock products, conflicting shipping types, or fulfillment restrictions. Rules are enforced at checkout so invalid orders are stopped before payment. This helps reduce fulfillment errors, refunds, and manual order fixes while giving merchants clear visibility into blocked checkouts. more
  • Block pre-order + in-stock items being purchased together
  • Block carts with conflicting shipping or fulfillment methods
  • Block carts with products that must be purchased alone
  • Block invalid or incompatible product combinations

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