How to properly throw MethodArgumentNotValidException

If you have lombok dependency in your project, you can also fake compiler by using @SneakyThrows annotation.

https://projectlombok.org/features/SneakyThrows

MethodArgumentNotValidException is a subclass of Exception. This means that it's "checked": To throw it out of your verifyCard(..) method, you have to declare that verifyCard(..) can throw it:

private void verifyCard(CardRequest card) throws MethodArgumentNotValidException {
// your code
}

You have already handled it by the catch block, you should remove try-catch to your global handler catch it.

then specify the method like below

private void verifyCard(CardRequest card) throws MethodArgumentNotValidException