Which of the following is NOT required to be shown to prove expenses are incurred?

To demonstrate that expenses have been incurred, a certain level of documentation is typically required to substantiate the claims made. The amount of the expense, the date it was incurred, and the place where it took place are all essential pieces of information that help establish the validity of the expense.

The amount of the expense shows the financial impact, while the date provides context for when the expense occurred, which can be crucial for aligning it with the appropriate reporting period or understanding its relevance to particular activities. The place is also relevant because it situates the expense in a specific context, potentially offering insights into its legitimacy or necessity.

In contrast, the method of payment is not necessarily essential to proving that an expense was incurred. While it can offer additional context or details about how the expense was managed, it does not directly affect the verification of the actual occurrence of the expense itself. Therefore, documenting the method of payment is not a mandatory requirement for substantiating an incurred expense, which makes it the correct choice in this context.