Invoices are issued in all cases where new products or services are purchased. In other cases where invoicing is not required but is necessary, please contact us. DEV74 has adhered to electronic invoicing to guarantee to all its customers the maximum punctuality and transparency in tax transactions. A courtesy copy in pdf will also be sent to the email address indicated in the registry. To obtain an invoice it is mandatory that at least one of the fields, tax code or VAT number is filled in the registry of your account.