What must every List View Panel have according to Guidewire standards?

In the context of Guidewire standards, every List View Panel must include an associated toolbar. The toolbar is a crucial component that enhances user interaction with the panel, providing essential functions such as creating, editing, or deleting items. This ensures that users have the necessary tools readily available to manage the listed data effectively, leading to a more efficient experience when navigating and manipulating information within the panel.

While other options such as custom design elements, pre-defined data models, and unique identifiers may also be relevant in certain contexts, they are not fundamental requirements for every List View Panel. The toolbar's presence is specifically mandated by Guidewire to ensure consistent functionality and accessibility across different applications. This standardization aids in maintaining a uniform user interface, promoting familiarity and ease of use within the Guidewire platform.