notification of separation from family register; notification of creation of a new family register
A formal document submitted to a municipal office to remove oneself from the current family register and establish a separate one. Used in Japanese family registration (koseki) procedures.
Upon marriage, I submitted a notification of separation from the family register and created a new family register.
Notifications of separation from the family register are accepted at municipal offices.
Compound of 分籍 (ぶんせき, 'separation from a family register') and 届 (とどけ, 'notification, report').