In Guidewire InsuranceSuite, when a single location must display significantly different content based on a specific property-such as a Line of Business (LOB)-the recommended architectural pattern is to use PCF Modes. While visibility logic (Option A or B) can technically hide or show elements, it leads to " bloated " PCF files that are difficult to maintain and performance-heavy, as the system must evaluate complex Boolean expressions for every element in the container.
Using Modes allows a developer to create multiple versions of an InputSet (or other containers) that share the same name but have different " Mode " identities (e.g., HO, CA, PA). In the parent configuration file (ExposureDetailDV), the developer adds a single InputSetRef. Instead of pointing to a static file, the def attribute points to the shared name of the InputSet, and the mode attribute is set to a dynamic expression, such as Exposure.Claim.LOBCode. At runtime, Guidewire ' s UI engine evaluates this expression and " swaps in " the specific PCF that matches the mode. If no specific mode matches, the system gracefully falls back to the Default mode. This approach promotes modularity, encapsulates LOB-specific logic within separate files, and ensures that the main ExposureDetailDV remains clean and readable. This is a core tenet of PCF Architecture and Dynamic UI management within the InsuranceSuite Developer curriculum.