Provide an example of a verification formula in a Use Case.

The validation formula in a Use Case is a condition that must be met for the step or the entire scenario to be successful.

Example: in the Use Case "Order Processing," the validation formula might be:

If the order amount > 0 and the number of items in the cart > 0, then payment is allowed.

Or in the form of a logical expression:

(OrderAmount > 0) AND (NumberOfItems > 0)

This helps formalize business rules and automate validation during requirements analysis.