It seems like most countries have some variation of this issue. When I had to apply for government assistance here in Australia, there was a whole debacle because as I discovered, I don't actually have a middle name but rather 2 first names because my birth information was filled in incorrectly. So that caused issues because all 3 of the IDs they demanded listed different information. My student ID didn't list my second name at all, my learner driver permit initialised it, and my birth certificate listed it in full.

Then my government service account messed things up too, because certain services have my 2nd name listed as either a middle name, or just a second first name so they decided that because I have different government services linked in "different names" I must be committing fraud