Final answer:
Remittance advices sent to a customer and returned with payment are examples of turnaround documents. They are part of a control system to ensure correct payment allocation to invoices.
Step-by-step explanation:
Remittance advices, when sent to a customer and returned with payment, are examples of turnaround documents. These documents are typically sent along with invoices and are designed to be returned by the customer with their payment information. They are pre-printed forms that the company initially sends to a customer and then the customer returns them with the payment.
This process helps in quick and accurate recording of the payment as they include details specific to the customer's account and the invoice being paid, facilitating efficient data entry. As turnaround documents, they are part of a control system designed to ensure that payments are matched correctly to the corresponding invoices, thereby supporting accurate bookkeeping and financial management.