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AppHighway Address Guard

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Validate German shipping addresses in Shopify Checkout: DHL Postnummer for Packstation and Postfiliale, mandatory house numbers. Runs as a Shopify Function.

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| Launched Sep 2026
Address Guard blocks undeliverable German addresses at checkoutCheckout blocks a Packstation address without DHL PostnummerCheckout asks for a missing house number on a German addressAddress Guard admin page with validation status and checksAddress Guard blocks undeliverable German addresses at checkoutCheckout blocks a Packstation address without DHL Postnummer

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