When I was younger, I believe I accidentally entered the wrong birth-year for one of my 3DS eShop accounts, entering 96 instead of 97. Really didn't affect much of anything, but still an error I made in the past.
I still put a fake birth date when I sign up to stuff. They don't need to know my birth date, or any other PII.
Really didn't affect much of anything, but still an error I made in the past.