In SAP Central Business Configuration, the changes that are possible for the Starter System after content activation are editing existing product-specific configurations, adding new organizational entities, and creating additional product-specific configurations. You can edit existing product-specific configurations to adjust them to your business needs. You can add new organizational entities such as plants or sales organizations to extend your scope. You can create additional product-specific configurations to enable additional features or functionalities. Reference: SAP Help Portal - Configuring Your Starter System