I am an IATF internal auditor for my company and I noticed that my certificate has an expiration date of 08/2020. I cannot find any requirement that says I need to go through another IATF auditor training to become recertified, just that I must "maintain competence". Our procedure says that the way we maintain and improve auditor competence is by requiring all our internal auditors to complete at least 2 audits a year. We also go over any internal and external changes in regards to auditing and customer requirements. I don't think it is necessary for me to go through another 5 days of IATF auditor training just to get a certificate if there's been no changes to the standard. Should I be doing something else to prove that I have been maintaining my competence as an internal auditor? Is it ok if I don't have a more up to date certificate? How would an external auditor react to my certificate being expired?