Real-World Example
Jane wants to pay more than the next installment amount. The portal should apply the extra payment to the account balance and adjust remaining scheduled payment amounts or calendar events as needed.
Visual Flow
How It Should Work
- It should validate extra payment amount and payment method before processing.
- It should allocate successful payment correctly across the schedule.
- It should update remaining payment amount, history, and calendar event amount where needed.
How It Should Not Work
- It should not overpay a completed account without a clear rule.
- It should not update the schedule before payment success is confirmed.
- It should not leave calendar amounts stale after allocation changes.
Last modified on July 30, 2026
