An application was completed and therefore the fee was paid however it's later determined that the fee isn't applicable (for example, fees collected for a student who is re-entering his/her details in the platform.)
An application was completed and multiple payments are rendered for the same application.
More than one application was completed, and payment was made for both applications when a single application could have been updated without additional fee payment.
A student qualified for a fee waiver however updated his/her details in the incorrect application and paid the fee.
Other exculpatory circumstances could also be thought-about with applicable supporting documentation and institute approval.