I mean, just think about it for a couple of seconds before making a thread like this. Can you get someone's identity from their serial number and their certificate alone? No, of course you can't. That's what Nintendo uses to ban you. So if you make a GDPR deletion request, sure they will delete all your data for eShop and stuff like that since that involves payment processing, etc. But they will not remove your serial and certificate from the ban list. That isn't personal identifiable information. It's console-identifiable, since they can track that Switch around, but that isn't protected by GDPR. Only Personal Identifiable Information is, which the serial and cert are not.