Error Code: 9001-0112
Description:
You are unable to deactivate your Nintendo Switch console from accounts.nintendo.com and you receive the error code 9001-0112.
Additional Information:
A console can only be deregistered as the pass-enabled console for your Nintendo Account from accounts.nintendo.com once every year.
What to Do:
If you are receiving this error code, it indicates the Nintendo Switch console you are trying to deregister has already been deregistered as your pass-enabled console off-device over the last year.
Consoles that cannot be deregistered off-device can still be deregistered through Nintendo eShop.