B2B checkout shows the PO number as optional, so orders can arrive without the reference your buyer's accounts payable team needs to approve the invoice. This app stops a B2B order until the buyer enters a PO number, and shows your message under the PO field. It only checks orders placed for a company, so consumer checkout never changes, and it works on every plan with B2B. On Pro, require a PO format, give companies or locations their own rules or an exemption, and set messages per language.

• Block B2B orders until the buyer enters a PO number
• Show your message under the PO field, in the buyer's language
• Leave direct-to-consumer checkout exactly as it is
• Require a PO format: a prefix, a length or a pattern
• Exempt companies or locations, or give them their own PO rules