In what situation would the Cancellation, By requisitioner be applicable?

The option that states "When a buyer decides to cancel an order" correctly describes the situation where the Cancellation, By requisitioner process is applicable. This term specifically refers to a scenario where the person or entity that originally requested the purchase—the requisitioner—intends to terminate or withdraw their order for a particular item or service.

This process allows the requisitioner to effectively communicate their decision to cancel to the appropriate parties involved in the procurement process, ensuring that no further action is taken regarding the order. It emphasizes the requisitioner's authority over their requests and provides a formalized method to prevent unwanted delivery or charges.

In contrast, the other scenarios do not align with this process. For instance, late deliveries or incurred additional charges may lead to different forms of action, like claims or disputes, rather than outright cancellations initiated by the requisitioner. Similarly, requests for changes in specifications would require amendments or modifications to the existing order, rather than cancellation. Thus, the situation that best fits the Cancellation, By requisitioner is when a buyer actively decides to cancel an order.