Developer shares 6 key lessons from building a Shopify native B2B wholesale app

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Shopify expanded its native B2B features — including company accounts, catalogs, and net payment terms — to all plan tiers this spring, not just Plus subscribers. A developer building Tradelane, a wholesale application and approval tool for Shopify merchants, documented several technical pitfalls encountered during the process. Notable issues included silent failures when assigning contacts to companies sharing an email, React's automatic HTML-escaping breaking inline CSS font names, and challenges with multi-tenant CAPTCHA configuration across merchant domains. The developer also integrated EU VAT number validation via the free VIES API, which proved popular with merchants screening wholesale applicants. The article concludes that while Shopify's native B2B handles pricing and payment terms well, the merchant onboarding workflow remains incomplete, creating an opening for third-party apps.

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