invoicing procedures if contractor has a legal responsibility to collect any taxes directly from company for payment to the appropriate taxing authorities,the portion of any payment for company to contractor representing such taxes shall be separately stated in the invoice in a manner and with all accompanying documentation necessary to satisfy legal invoicing requirements for taxes impose on company (e.g., time sheets,reports,plans,training materials , proposals, etc.). absent such legal requirement , and subject to the express requirements of exhibit B, contractor shall not identify any separate item constituting taxes. company shall not be obligated to pay tax invoices that do not comply with invoicing procedures