# Subtasks

Subtasks belong to assignments. They correspond to the checklist of items called a task list, located under work items/assignments in the worklist in the Resource Management application. Subtasks (tasks) can be added to any work item/assignment.

> **Note:** For assignment subtask counts, see the [List project assignments](/api/resource_management/openapi/assignments_with_subtasks/getprojectsprojectidassignments) operation.