Your thoughts on using class constants of an exception class

<?php

namespace mine;
use RuntimeException;
use Something as Controller;

class SomeKindOfException extends RuntimeException{
    public const REASON1 = "Sorry, but you hit reason 1";
    public const REASON2 = "Sorry, but you hit reason 2";
}

class SomeController extends Controller{
    public class somePublicAction(){
        throw new SomeKindOfException(SomeKindOfException::REASON2);
    }
}