noun
unregistered owner identifier
Computing term for an identifier assigned to an owner who has not been formally registered in a system.
未登録所有者識別子は、システムが自動的に割り当てる場合がある。
An unregistered owner identifier may be automatically assigned by the system.
Compound of 未登録 (unregistered), 所有者 (owner), and 識別子 (identifier).