Payments issued to clients can be invalidated. The difference between invalidating and canceling a payment is that a canceled payment can be reissued. When a payment is invalidated, it will no longer be considered by system processing. This is to allow for the reissuing of a replacement payment if, for example, the original payment was issued for the incorrect amount. The payment can be both cancelled and invalidated at the same time. The system allows for this to happen at time of cancellation, or in two stages: cancel now and invalidate later.
For example, John Smith is receiving benefit payments of $70 per week, paid in advance on a Monday. He goes back to work on a Tuesday, which means he is only entitled to benefit on the Monday, i.e., he is only due $10 that week. He receives a check for $70 but phones the organization and informs it of his change of circumstance. The payment is cancelled, as he will not be cashing his check of $70, and invalidated, as the organization wants to issue a replacement payment. The certification on his benefit case is modified to end John Smith's payments on the Monday. This results in a replacement payment for $10 being issued to him.
Furthermore, if there is a question mark over which day John returned to work when he informs the organization of his change of circumstance, the organization may require documentation detailing the date he started in his new employment. In this instance, the organization can cancel John's payment but not invalidate it until it receives the documentation from his new employer.
When a payment is invalidated, all of its associated components are invalidated with it.