unscheduled task
Computing term for a task that is not run on a fixed schedule, often triggered by events or conditions.
In this system, unscheduled tasks are executed when a specific event occurs.
定期業務 refers to a scheduled or periodic task, while 不定期業務 is an unscheduled one.
Compound of 不定期 (irregular, unscheduled) and 業務 (business, task).