From my personal experience, audits are to making sure that everyone working in the company is familiar with the company’s goal and mission. Another main point is to expose everyone to SOP’s for their own department. Always have all documents updated and organized. All auditors are not the same, their way of ensuring process are different from each other. Some only come and look at the SOP while other may ask how the procedure was done and details. Sometimes you need to learn to not expose all internal details to auditors, only provide the information that the auditors have asked for, they do not care about long details we provide and may land you and your company in trouble. Since auditors job is to look for flaws in the company, they are constantly looking for any point to pick on.