When a specific URL for a page action does not exist, what does the system default to?

When a specific URL for a page action does not exist, the system defaults to matching the wildcard page action. This behavior is essential for ensuring that tracking continues without interruption, even when the precise URL isn't available. The wildcard page action acts as a catch-all, allowing the system to capture related data and user interactions without requiring a fully specified URL. This design helps maintain engagement tracking and enables marketers to still gather valuable insights into user behavior and preferences, promoting seamless operation of the engagement tools.

In this context, the other options do not provide a suitable mechanism for handling missing URLs. Relying on user preferences or creating a new generic action may lead to a lack of specificity in tracking, potentially diluting the data quality. Stopping tracking altogether would be counterproductive, as it would eliminate the ability to monitor engagement efforts, which is crucial for understanding user interactions. Thus, matching the wildcard page action is the correct and most effective approach in this scenario.