5.9 Traceability – The vendor and vendor’s suppliers and subcontractors shallmaintain a system of lot traceability that will permit complete traceability fromfinished product back through processing to initial raw material. All raw materialusage shall be on a first–in, first–out basis. A lot shall consist of that productprocessed in a continuous manner using the same lots of all materials andcleaned on the same production equipment during a continuous shift. Traceabilityrecords shall be maintained on file for a minimum of ten years from time of