It does make me wonder -- can someone wrongly declared dead travel to Europe, invoke the GDPR's right of rectification, and force credit agencies and the like to make them undead? This seems like it might be faster than getting appropriate court rulings.
Would be interesting if someone gave it a try, though - doubly so on a biometric passport - if all the biometrics check out but you're officially dead - what will the result be?
Chances are you'll find yourself in an interrogation room with lots of law enforcement wondering how on earth you managed to substitute a dead person's biometrics for your own...
Additionally, I suspect no institution would interact with YOU in any capacity - seeing as you're dead - but rather interact with your estate.
Lawyers and bureaucrats would have a field day for years if someone gave this a try. :)
The implementation will be corrected to match the documentation.
This is the case in Japan. No body, no declaration of death. It means people who died in disasters can be declared "missing" indefinitely.