I have customers in several countries. If one of them died and I was sent, say, a Danish death certificate, I wouldn't know how to verify/authenticate it. With

I have customers in several countries. If one of them died and I was sent, say, a Danish death certificate, I wouldn't know how to verify/authenticate it. With ~200 countries and almost as many languages, that becomes a non-trivial issue. How do $megacorps deal with this? Is there anything a small business can learn from them in that regard?