Which of the following are types of indirect modifications?

Indirect modifications in SAP typically refer to changes made to the standard functionality of SAP applications without directly modifying the original objects. This avoids potential issues during upgrades and patches.

Creating clones of SAP objects is one such type of indirect modification because it involves creating a copy of a standard object, which can then be modified independently of the original. This means that while you can extend the functionality and adapt it to specific needs, the original object remains unchanged, preserving its integrity.

The other choices, while relevant to modification in the context of SAP, do not fit the definition of indirect modifications as neatly. Creating interfaces can involve direct modifications if you implement them on standard objects. Class method overwrites are not considered indirect since they directly override the behavior of a method in the class. Changes pursuant to an SAP Note often reflect direct corrections or enhancements suggested by SAP to existing standard code, which means the original object is adjusted rather than preserved as in indirect modifications.