FAQ Home All About Problem and Errors in Leavers Unable to Process a Leaver 4558: Unable to process a P45 Leaver on or before the last (YTD) payrun date. Why? 4555: Reporting P45 Leavers with Outstanding payments (Previous Tax Year). How? Errors in Leaver (former employee) Payment 4520: Amending the Former Employees' Payment. How? Errors in Leaver Leaving date 4556: Amending the P45 leaver having a mistake. How? 4560: Recording the deduction for pensioner who died in the current year. How?