When a past time off request is approved or a past manual adjustment is made after a carryover loss event has happened, the carryover loss is not automatically recalculated. This means that the balance could be incorrect because the carryover loss needs to be recalculated.
Example: On December 31, an employee has three days of unused time off. They cannot carry over any days to the next year. So, on January 1, the system subtracts three days, making the balance 0. On January 2, the employee submits a past time off request for three days from December 2931, which gets approved. His balance now shows as -3 because it will not automatically recalculate itself once the carryover loss event has happened.