Business Object Builder 
You can use the Business Object Builder to create, display or change object types in the Business Object Repository.
If you want to display or change a defined object type in the Business Object Builder, you must know its ID, name or description.
If you do not know the object type precisely or if you are not sure whether there is an appropriate object type, you can find an object type using its position in the component hierarchy or using its relationships to other object types. In this case, use the Business Object Repository Browser.
Runtime objects are based on object types.
Various functions such as check, test, generate, or where-used list are available. You can also create subtypes of an existing object type or determine a delegation type.