What is a task dependency?

Task dependencies show what must be done before a given task and what will be done after the task is complete. Project managers can create dependencies between any two or more tasks in a project.

Task dependencies allow you to establish relationships between tasks. This can help to frame a task in the context of a larger project plan.

There are two types of task dependencies:

Note: Task dependencies and tracker artifact dependencies are different things.
Important: A task cannot be dependent on itself. You cannot make a task both a predecessor and a successor to another single task. If you attempt to do so, you will receive a circular dependency error.