What happens when someone is at maximum accrual and doesn't accrue vacation leave for the month since no vacation leave was taken in the previous month? Where's the linkage between accrual and usage?

Each leave accrual code has an associated maximum. The payroll system will not automatically accrue leave for an employee once the maximum has been reached. Since vacation leave is accrued at the end of the month, and usage is reported in arrears on the 23rd of the month, departments must process an adjustment transaction to report accrual that was stopped by PPS. To avoid having to process such adjustments, departments should notify employees who are approaching maximum leave accrual and make sure leave is used in a timely manner. Departments should manage employees’ leave accrual so that they stay at least two months under the accrual maximum at all times.