The principle that personally identifiable information (PII) should be kept up-to-date and relevant to the purposes for which they are to be used is attributed to which fair information practice per t

Purpose Specification requires that the purposes for collecting personal data be specified at the time of collection and that data use be limited to those purposes.

Security Safeguards mandates that reasonable security measures must be in place to protect personal data from risks such as loss or unauthorized access, modification, or disclosure.

Collection Limitation dictates that there should be limits on the collection of personal data, which should be obtained by lawful and fair means, preferably with the data subject's knowledge or consent.

The Data Quality Principle within the OECD Fair Information Practice Principles (FIPPs) explicitly states that personal data should be relevant to the purposes for which it is to be used, and, to the extent necessary for those purposes, should be accurate, complete, and kept up-to-date. This directly matches the question's description of keeping PII up-to-date and relevant for its intended purposes.