Changing an address in Korea: which records should residents keep and verify?

This is an editorial reconstruction by the Kapy team based on recurring needs, not a repost of source text, comments, or personal data. The discussion concerns records to keep for an address change in Korea. Circumstances, documents, and current rules can differ, so please share a safe checklist of questions to take to the responsible authority, and explain which details should be redacted in public discussion. Do not predict an application outcome or present personal experience as an official rule. Never post passport numbers, account details, full addresses, or another person's documents.