As someone with diacritics in my family name, I can relate. Some years back I could not retrieve concert tickets bought at the FNAC (a large French music shop) even by name, and we figured out later that it was only because the è in my name had been replaced by a space due to mainframe conversion ^_^
putting aside that there is no language agnostic way to replace non us-ascii letters in Latin languages the sometimes absurd ways it can get done wrong are just rediculus
like replacing letters with accents with spaces or some unknown letter mark instead of the letter without accent
this also doesn't just apply to human names e.g. if you replace äöüß in German city names you can get the names of different existing cities and also it's often done wrong too (äöü are accents in Germanic languages, they are full independent letters which official us-ascii representations are ae,oe,ue)
The point is it's a different name which can lead to a name collisions where before there was none wore a collision which only happens on some systems.
The result can be not so funny things from less harmful things like problems with reservations for idk. concert tickets or worse hotel rooms to very harmful things like you getting wrongly negative credit scores, being wrongfully investigated for a crime, getting your business bank account locked because of wrongful detection of likely supporting terrorists etc.
And while some people might argue that given that human names are not unique non of this should happen that sadly isn't how the world works.And while I can't find links to it anymore because it was a few years ago there had been cases of the first two cases. And at least cases of the last wrt. other kinds of spelling errors so it definitely can happen.
