Step 1: Create a deduction payroll category called “Adj. Vacation”
Step 2: Assign payroll category to employee using employee ->master pay card, for whom you are adjusting vacation accrual
Step 3: employee -> “pay card history” create history record for employee to pay amount as well as deduct amount using deduction category.
Note:
Never modify the opening balance unless it is incorrect, because there is no history of the change record.