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I have an online store based on PrestaShop 22.214.171.124; in the Checkout process, in the Address Section of the "Quick Checkout Page" a checkbox saying "Request Invoice" have been added; the checkbox appears only when cart total is >= a configured amount. A user could request an invoice ONLY if:
1. he has a Fiscal Code or Vat Number on one of his Addresses
2. Cart total is >= a configured amount
The project is about making the checkout process and invoice generation to work correctly following the above conditions.