working item; action item; implementation item
Computing and project management term for a specific task or item to be carried out, often in a checklist or plan.
I compiled the project's action items into a list.
Please report on the progress of each working item by the next meeting.
タスク is a more general term for a task, while 実施項目 specifically refers to an item to be implemented, often in a formal plan or system.
項目 is a general 'item' or 'entry', whereas 実施項目 explicitly denotes an item for execution or implementation.
Compound of 実施 (implementation) and 項目 (item).