Which of the following statements about When rules is incorrect?

When rules in Pega are designed to evaluate specific conditions and return a boolean outcome, which is either true or false. This fundamental characteristic allows developers to control the flow of processes based on whether certain criteria are met. The essence of a When rule is to determine whether a condition is satisfied rather than to compute or produce numerical outputs, which is why the statement indicating that they can return numerical outputs is not accurate.

The ability for When rules to be evaluated multiple times is an important feature, especially in scenarios where conditions may change during a process. This characteristic allows the system to dynamically respond to changes in data or state.

Moreover, When rules are versatile in their application, as they can evaluate various data types. They are not limited to a single data format; instead, they can assess integers, strings, dates, and other types, which broadens their utility within applications. However, the defining purpose of When rules is strictly to return boolean results, underpinning their role in guiding decision-making processes.