In Pega, when creating a case type, a screen flow is often created to define the user interface and guide users through the steps of the case. A screen flow is a visual representation of the steps and screens that users interact with during the case process. It allows you to design a sequential flow of screens, forms, and user interactions to gather information, display data, and perform actions.
Screen flows are commonly used to create a guided user experience by presenting users with relevant screens at each step of the case. These screens can include input fields, validation rules, decision points, and integration points to interact with external systems. By using a screen flow, you can control the order and visibility of screens based on the context and requirements of the case.