Verkkokauppapaja B2B Checkout for WooCommerce

Verkkokauppapaja B2B Checkout makes WooCommerce ready for Finnish business customers. Everything described here is included in this plugin, with no limits, trials or license keys.

• "I am buying as a company" toggle at checkout. The company fields are shown (and required) only for business customers.
• Business ID (Y-tunnus) with format and checksum validation, with inline error messages in the block checkout.
• YTJ autofill: the company name and address are fetched from the Finnish Patent and Registration Office's free open data API (PRH YTJ API v3). Results are cached.
• EU VAT ID derived automatically from the Y-tunnus (FI + 8 digits), with format validation.
• Buyer reference / PO number (optional field).
• Company details are shown in the admin order view, order emails and the customer's order view, and are available to other plugins through y_kassa_get_order_data() and the y_kassa_order_data filter.
• Works with both the block checkout (Additional Checkout Fields API) and the classic checkout. HPOS compatible.
• Privacy tools: suggested privacy policy text and personal data export and erasure.
• Developer friendly: add your own fields, checks and order data with filters (y_kassa_checkout_fields, y_kassa_validation_result, y_kassa_meta_keys, y_kassa_display_rows).
• English source strings, ready for translation (Finnish translation via translate.wordpress.org).

Verkkokauppapaja B2B Checkout Pro (optional) A separate, optional add-on is available for shops that need more: EU VIES VAT validation, e-invoice (verkkolasku) address and operator fields, details on PDF invoices, warnings or blocking for bankrupt/ceased companies, B2B-only mode, company details in My Account, a Business ID column in the orders list, a REST API field and admin editing. This plugin works fully on its own without it. More about Pro External services This plugin connects to one external service when a customer enters a business ID at checkout: PRH open data YTJ API (Finnish Patent and Registration Office), https://avoindata.prh.fi/opendata-ytj-api/v3/companies. The business ID entered by the customer is sent to look up the company's public register data (name, address, VAT registration, status). Terms / licence (CC BY 4.0), PRH privacy. No other data (names, emails, addresses of the customer) is sent. Requests are made from your server only when a business ID is entered or an order is placed, and results are cached to minimise calls. Autofill can be turned off in the settings. Privacy

• Company details entered at checkout (Business ID, company name, VAT ID, buyer reference) are stored on the order and, for logged-in customers using the block checkout, on their customer profile (WooCommerce stores additional checkout fields there).
• The YTJ lookup result (registered name, company status, time of check) is stored on the order.
• The plugin adds a suggested text to Settings → Privacy → Policy guide, and hooks into the WordPress personal data export and erasure tools: order data is included in WooCommerce's order export/anonymisation, and customer profile data has its own exporter and eraser.
• No cookies, tracking or data sent to the plugin author.
• On uninstall, settings and cached lookups can be removed (opt-in); order data is kept because it is part of your accounting records.

0.3.2

• Changed: the optional Pro add-on link on the settings page now points to https://verkkokauppapaja.fi/b2b-checkout.

0.3.1

• Changed: the plugin is renamed to Verkkokauppapaja B2B Checkout for WooCommerce (slug and text domain verkkokauppapaja-b2b-checkout). Settings, order data and filters are unchanged.
• Security: extra output in the admin order company details box is escaped late.
• Removed: bundled translation files; translations are now loaded from translate.wordpress.org language packs.

0.3.0

• Changed: VIES validation, e-invoice fields, PDF invoice output, company status warnings, B2B-only mode, My Account company details, the orders list column, the REST API field and admin editing moved to the optional Pro add-on. Existing order data stays on the orders (Business ID, VAT ID and buyer reference are still shown); with Pro installed, existing settings and e-invoice/VIES data carry over unchanged.
• Fixed: block checkout text fields no longer show a placeholder on top of the floating label.
• New: filters for extensions (y_kassa_checkout_fields, y_kassa_meta_keys, y_kassa_display_rows, y_kassa_has_toggle, y_kassa_script_data, y_kassa_company_response).
• New: a small, dismissible link to the Pro add-on on the settings page.

0.2.0

• New: edit B2B details on the admin order screen, with re-validation and VIES re-check.
• New: Business ID column (with VIES status) in the orders list, HPOS and legacy.
• New: y_kassa object in the WooCommerce REST API orders endpoint (read/write).
• New: company details in My Account, shared with classic and block checkout pre-fill.
• New: field-level error messages in the block checkout.
• New: dedicated company name field in the block checkout, required only for business customers.
• New: privacy policy text, personal data exporter and eraser.
• Improved: WooCommerce 8.9–9.8 support in the block checkout (fields hidden until the company toggle is checked).
• Fixed: My Account company details not saving on WooCommerce 8.9–9.4.
• Fixed: partial checkout updates on newer WooCommerce no longer trigger full order validation.
• Security: remote calls use wp_safe_remote_get without redirects and with a response size limit; input length limits on the lookup routes.

0.1.0

• First MVP.