Which statement about Declare OnChange rules is true regarding work item processing?

The correct statement regarding Declare OnChange rules in the context of work item processing is that they can run only once for multiple property changes. This is significant because Declare OnChange rules are designed to trigger when a specific property changes on the current work item. When multiple properties are modified in a single transaction, the rule activates once, capturing the state of the affected properties at that moment.

This single invocation approach helps maintain performance and ensures that related actions occur in a coordinated manner, rather than reacting separately to every individual property change. As a result, the intended behavior of these rules is to streamline processing, rather than introducing latency or complexity from multiple executions triggered by a series of changes.

Understanding this helps in grasping how work item processing is managed efficiently within Pega, emphasizing the importance of reducing unnecessary overhead in the execution of rules that could adversely affect performance or user experience.