Which statement about Site Properties is correct?

The correct answer reflects that site properties are designed to be defined at a specific point in the OutSystems environment, particularly for application configuration and settings that should remain consistent across deployments and runtime environments.

Typically, site properties are set using the service studio interface and are intended to maintain their values without being changed programmatically during application execution. This restriction allows for better management of application configurations and prevents unintended modifications that could lead to application instability or inconsistency.

The other statements regarding site properties suggest potential access or usability that does not align with their intended usage in OutSystems. For example, site properties can indeed be accessed in screen actions, which allows for dynamic and flexible application behavior based on those settings. Additionally, although site properties cannot be of a record data type—which is a complex type—there are numerous other permissible data types, thus reinforcing the importance of understanding the types and scopes of site properties within the OutSystems architecture.