; Public Law 115–91 ). 3. Legacy information technology system inventory (a) Inventory of legacy information technology systems (1) In general Not later than 1 year after the date of enactment of this Act, and not later than 5 years thereafter, the Chief Information Officer of each agency shall compile an inventory that lists each legacy information technology system used, operated, or maintained by the agency. (2) Contents The Director shall issue guidance prescribing the information that the Chief Information Officer of each agency shall include for each legacy technology information system listed in the inventory required under paragraph (1). In issuing such guidance, the Director shall consider including for each legacy technology information system listed in the inventory— (A) the name or an identification of the legacy information technology system; (B) the office or mission of the agency that the legacy information technology system supports and how the office or mission uses the legacy information technology system; (C) to the extent that information is available— (i) the date of the last update or refresh of the legacy information technology system; (ii) the annual price, including recurring subscription costs and any costs to contract labor, to operate or maintain the legacy information technology system; and (iii) the name and contact information of the vendor