The insistence on a surname is quite annoying for people who don't have one or use one. In India, there are many cultures where a surname or family name isn't used or isn't passed down from one generation to another and to the next and so on. There are cultures where a surname is used. But what's very common across the country is addressing people by their first (or only) names whether or not one is close to them. Ev…
In some Western European cultures (Portuguese and Spanish, and thereby Latin American), most people have two last names. When dealing with automated systems in other countries, it causes all manner of problems!
That for sure would cause problems in some standard forms.