It’s apparently very hard to solve such an issue since there’s no procedures in place for reversing a death certificate. Wonder what the implications for the legally-undead person were, like when they actually kick the bucket, will they cause another issue with the inability of the system to have somebody dead twice? Did the initial “death” trigger any inheritance laws and other such things, I wonder?
edit: Is that person legally stateless now so able to claim citizenship from states that offer such to stateless people?