Why is the Directly reports to person on an employee's Position screen reflecting as "Not Active", when their employee record is active?

Why is the Directly reports to person on an employee's Position screen reflecting as "Not Active", when their employee record is active?

The Directly reports to person on an employee's Position screen will reflect as "Not Active" because the employee's position effective date is earlier than the manager's position effective date. 

Important!  It is not necessary to insert a new position record with a current effective date,  if the "not active" message is displayedThe workflow path will still apply on the condition that the directly reports to person is registered for ESS.

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