When are derived behavior definition types created?

Derived behavior definition types are created specifically when a developer creates a behavior definition. This process involves establishing how a business object's behaviors—such as create, read, update, and delete (CRUD) operations—interact with the data model, apply business logic, and provide the interface for handling these interactions.

When a developer formulates a behavior definition, they outline the rules and structure for how that behavior behaves within the context of a business object. This allows for customization and enhances the object's functionality to better meet the needs of the application. By defining these behaviors first, the developer sets a foundation that can be referenced later during the processing of various requests or when initializing components in the system.

The other possible events listed—processing a request, reading a business object, and initializing the EML—are all actions that occur after the behavior definition is already established, meaning they do not trigger the creation of derived behavior definition types. This reinforces the significance of the active role the developer plays in defining these behaviors upfront, which is essential for the subsequent operations performed on the business object.