on the books

Japanese Meaning

公式なリスト（メンバー、従業員、取引先、プロジェクトなど）に含まれている / 企業や組織の会計帳簿や公式記録に記載されている

Several volunteers are already on the books for next weekend's community clean-up.

数人のボランティアが来週末の地域清掃の公式名簿にすでに登録されています。

Sense（1）

Contained in an official list (of members, employees, clients, projects etc.).

Sense（2）

(business, accounting) Officially recorded in the financial records of a company or organization.

Promptly came the reply that there was no record on the books of father's owning any stock.

Sense（3）

(law) Officially recorded in the lawbooks; having the force of enacted law.

Britain already has heroin on the books as a medication.