In an interface, you can enhance an existing enhancement implementation with another enhancement implementation by:
To create a nested enhancement implementation for an interface, proceed as follows:
A screen containing the already existing enhancement implementations for the interface appears.
The relationship between the new enhancement implementation and the already existing implementation is visible in the Parent Enhancement column.
Currently, only two levels of nesting for class and interface enhancement implementations are allowed.
Only the components belonging to the parent enhancement implementation can be processed in the nested enhancement implementation. If you want to enhance the original object (an interface or a class), you should place the new enhancement implementation at the first enhancement level.
In a class, you can enhance an existing enhancement implementation with another enhancement implementation by:
To create a nested enhancement implementation for a class, proceed as follows:
A screen with the already existing enhancement implementations for the class appears.
The relationship between the new enhancement implementation and the already existing implementation is visible in the Parent Enhancement column.
At the second nesting level you are not allowed to add method exits to a method belonging to the original class. You can enhance only components belonging to the parent enhancement implementation.
For more information, see SAP Note 1286805.