Retro pays double the expected amount for allowances

Summary:

Where elements are entered with a retrospective effective date, i.e. not starting in the current payroll month, the system is paying out double the expected amount.

Content (please ensure you mask any confidential information):

Example:

Car Allowance is entered on 01/02/2024 with an effective start date of 01/12/2023, and the monthly amount is £500.

The correct output in February pay run would be £1500, as there is £500 to be paid for each of December 2023, January 2024 and February 2024.

However what we find is that £2500 is paid instead, £500 for the current month (February 2024) which is correct, and then £1000 for each of December 2023 and January 2024 which is double the expected amount.