Borema PO Validator

Borema PO Validator makes purchase order numbers required at B2B checkout and validates them against your exact format rules. Since Shopify's standard B2B checkout can't enforce PO number requirements or check formatting, this app fills that gap by letting you set validation rules once and applying them to every order. Configure your PO format using pattern matching, prefix requirements, and length rules. The validator works server-side across all checkout types, including express and accelerated checkouts. When buyers enter an invalid purchase order or leave the field blank, they see clear error messages explaining what needs to be corrected before completing their order. The app includes built-in format presets for SAP and US Government purchase orders, and supports translated error messages for international markets. Orders arrive with correctly formatted PO numbers ready for your accounts payable team to process without delays or back-and-forth communication.