This error can occur if there are duplicate or blank edit values in an Employee Data Item.

Solution:
  1. Select Payroll, Maintenance, Edit Values.
  2. Select S)Scroll.
  3. Review recently added or changed Employee Data Items. 
  4. Remove duplicate or blank edit values. If 2 edit values have the same number but one has a leading space in front of the number, this is considered a duplicate and one value must be removed.