I read your article on Managing Medical Device Infrastructure and we are wondering to what level of detail and validation we have to go. For example, we have measuring equipment that requires calibration, so we create validation records for each piece of equipment, including calibration schedules and service schedules. We also have a large volume of software, for example document writing, spreadsheets, ERP systems, Finance system, etc etc etc. We also have computers for development that our development team uses, computers for service delivery that our programmes run on. The same question applies, we wonder if we need records for each computer, each desk, each software package. Can you provide any clarity in this area for us at all?