We are preparing for our annual surveillance audit, and in reviewing prior CARs(so I can ensure we are prepared to show effectiveness) I came across a CAR I'm not sure why we were written up for. Kind of late as it's said and done, but just for my understanding... We had a tool that the calibration house reported as out of calibration, so we took it out of service but we had no records of who decided what and took what actions so we were written up. Specifically - ISO 7.1.5 requires that "The organization shall determine if the validity of previous measurement results has been adversely affected when measuring equipment is found to be unfit for its intended purpose, and shall take appropriate action as necessary.". To make sure we're in compliance today, I read ISO section 7.1.5 as well as our internal procedures and I don't see where it specifically says records must be maintained. Am I misunderstanding or missing something?