The Cancel Invoice is a process that is used to void an invoice that has already been issued. This process is used when an invoice has been issued in error, or when the goods or services associated with the invoice have been returned or canceled. The process of canceling an invoice involves issuing a credit note to the customer, which will cancel out the original invoice. This credit note will be issued in the same amount as the original invoice, and will be used to adjust the customer’s account balance. In some cases, the customer may be asked to return the original invoice, or to provide proof of cancellation. Canceling an invoice is an important part of the financial management process, and it is important to ensure that the process is carried out correctly.