How do I resolve the error "Effective date must be unique to each position" when updating employee positions via the Bulk Actions screen?

How do I resolve the error "Effective date must be unique to each position" when updating employee positions via the Bulk Actions screen?

The error "Effective date must be unique to each position" will display when updating the employees' position without a new effective date via Bulk Actions screen.

      Navigate > Bulk Actions

      

      

Note! To avoid the error, the record being added requires a unique effective date that is different from the current effective date.