This plugin extends WooCommerce checkout forms to accommodate business customers, specifically by adding and validating official company identification numbers. It is essential for stores operating in the Czech Republic, Slovakia, and other EU countries that need to collect and verify IČO (Company ID) and DIČ (VAT Number) for accurate invoicing and tax compliance.

• Adds Required Fields: It inserts IČO, DIČ, and IČ DPH fields into the checkout and customer account pages, making it easy for business customers to provide their tax information.
• Real-time Validation: The plugin validates entered numbers against official databases like ARES (Czech Republic) and VIES (EU), or performs mathematical checks to confirm format correctness. This prevents errors and fraudulent entries.
• Automatic Address Completion: For Czech companies, entering a valid IČO can automatically populate the Company Name, DIČ, Address, City, and ZIP Code fields using data from the ARES registry, speeding up the checkout process.
• Administrative Control: Store administrators can manage these fields from the user and order editing screens in the backend. Options include toggling field visibility with a "Buying as a company" checkbox and configuring validation rules.
• Tax Exemption Handling: It supports VAT exemption logic for international orders, helping stores apply correct tax rules based on the customer's provided VAT number and country. The plugin is compatible with numerous other WooCommerce extensions for invoicing, shipping, and payment processing. It requires PHP 7.3 or higher and the SoapClient library for full VIES validation functionality.