Get data necessary for editing Year-To-Date data of existing paystub.

The items which can be filled-in are returned in 4 lists: Wage items, Deductions, Taxes and Reimbursements.
Any previously stored data is prefilled in these items.
Returned items have validity limited to selected pay period - so if necessary, successive calls with different pay period dates
need to be made in order to obtain valid data.

Setup Payroll Wizard State: DataEntry