a common system of value added tax that as regards rules on invoicing is essential the simplification modernization and harmonization on invoicing
A common system of value added tax (VAT) as regards the rules on invoicing is essential to the simplification, modernisation and harmonisation of the rules on VAT invoicing.
A common system of value added tax (VAT) as regards rules on invoicing is essential the simplification, modernisation and harmonisation on invoicing.