Why must your name and date of birth match across documents?

It genuinely does, and the reason is procedural. Any institution — a university, a bank, a passport office, an employer — wants to satisfy itself that several documents belong to one person. It does that by matching the name, the parents’ names and the date of birth, and a mismatch makes that check fail.

Which is why one mismatch surfaces in many places at once. It shows up at admission, at a passport application, at opening a bank account — the same underlying cause each time, needing separate resolution each time.

The biggest exposure is the date of birth. The date on educational certificates is generally treated as settled and is hard to change, so the usual route is to bring the other documents into line with it. Trying it the other way round is a long and difficult process in almost every case.

The most effective step is therefore preventive: check the name, parents’ names and date of birth the moment any new document reaches you, and file a correction there and then if something is off. A correction that is hard a year later is easy in the first week.