Odoo-18.0-20251222/account_fiscal_position_vat_check/readme/DESCRIPTION.md

With this module, when a user tries to validate a customer invoice or refund with a fiscal position that requires VAT, Odoo blocks the validation of the invoice if the customer doesn't have a VAT number in Odoo.

In the European Union (EU), when an EU company sends an invoice to another EU company in another country, it can invoice without VAT (most of the time) but the VAT number of the customer must be displayed on the invoice.