Why am I receiving the "Employee not linked to a leave scheme" error when the employee is linked to a leave scheme?

Why am I receiving the "Employee not linked to a leave scheme" error when the employee is linked to a leave scheme?

This applies to all PaySpace editions.

The below error will appear if the effective date inserted for the leave scheme record is future dated.
      
      

      Navigate > Employee > Leave > Leave Setup

      

The employee will be attached to the leave scheme once this date is realised.