When a payment is split between siblings and the Business Rule is set to distribute payments proportionally based on the balance using the overall balance, the payment distribution leaves one student with a credit balance and the other with a partially paid charge.
The Business Rule uses a calculation to determine how much of each payment should go towards each child. The calculation takes the amount owed by the specific student and divides it by the total amount that the payer owes. This creates a decimal that is then multiplied by the amount of the payment, giving an amount that will be applied towards each student.
For example, a payer's total balance is $28,565. The balance on student A is $14,065 and the balance on student B is $14,500. According to the calculation, both students should receive exactly what they owe on their account balance. But when a payment for the full amount of $28,565 is distributed, all of student A's charges are left fully paid and a credit of ($.01) is left on the students account. All of student B's charges are fully paid, except one charge that is left will a balance of $.01.
Download and install the latest patch, which contains all fixes from previous patches. If you are running an older version, download and install the latest version and then the patch.