The reassessment information produced by the Engine is used to create the payment correction financial schedules.
When a change of circumstance results in a reassessment over a period which has already been paid, that reassessment may determine that the entitlement amount originally calculated and subsequently issued to the nominee for that period was incorrect. When this occurs the original entitlement must be corrected and a balancing payment or bill must be issued. A payment correction is the mechanism used to do this.
If the original payment was larger that it should have been, an overpayment correction will be created. If the original payment was smaller that it should have been, an underpayment correction will be created. If the original payment was comprised of multiple components and the total amount for the overpaid components was found to be the same as the total amount for the underpaid components, a net zero payment correction will be created.
Reassessment information is stored for each nominee affected by the payment correction in the NomineeOverUnderPayment table. This information is then broken down by component for each nominee and stored in the OverUnderPaymentBreakdown table and is used to create evidence for payment correction. The type and number of evidence records created depends upon the type of product used to deliver the payment correction. Each evidence record results in the creation of one corresponding financial component which in turn is used to create one instruction line item.