1. What are the different ways in which you can make changes to SAP standard software ?

Customizing

Enhancements to the SAP Standard

Modifications to the SAP Standard

Customer Development

2. What is customizing ?
Customizing is the setting of system parameters via SAP's own interface.

3. Why do you need enhancements ?

The standard applications do not offer some of the functionality you need. The R/3 enchancement concept allows you 

to add your own functionality to SAP's standard business applications.


4. What are the different types of enhancements ?

Enhancements using customer exits

Customers' potential requirements which are not included in the standard software are incorporated in the standard

as empty modification 'shells'. Customers can then fill these with their own coding. Enhancements can relate to

programs, menus and screens. Upward compatibility is assured. In other words, SAP guarantees that the jump from the

standard software to the exit and the interface which call the exit will remain valid in future releases.

Enhancements to ABAP/4 Dictionary elements

These are ABAP/4 Dictionary enhancements (creation of table appends), text enhancements (customer-specific key

words and documentation for data elements) and field exits (creation of additional coding for data elements).

5. What is customer development ?

Creating customer-specific objects within the customer name range.

6. What is SSCR ?

SSCR (SAP Software Change Registration) is a procedure, for registering all manual changes to SAP source coding and

SAP Dictionary objects.

7.What is the difference between modifications and enhancements ?

Modifications mean making changes to the SAP standard functionality.

Enhancements mean adding some functionality to SAP standard functionality.

8. What are the disadvantages of modification ?

Modifying standard code can lead to errors

Modifications mean more work during software upgrades

9. What are the advantages of enhancements ?

Do not affect standard SAP source code

Do not affect software upgrades

10. when do you opt for modification ?

Customer exits are not available for all programs and screens within the R/3 standard applications. You can only

use exits if they already exist within the SAP R/3 System . Otherwise you have to opt for modifications .

11. What are the various types of customer exits ?

Menu exits

Screen exits

Function module exits

Keyword exits

12. What is a menu exit ?

Adding items to the pulldown menus in standard R/3 applications .

13.What is a screen exit ?

Adding fields to the screens within R/3 applications. SAP creates screen exits by placing special subscreen areas

within a standard R/3 screen and calling a customer subscreen from within the standard dynpro's flow logic.

14. What is a function module exit ?

Adding functionality to R/3 applications. Function module exits play a role in both menu and screen exits.

15. What is a keyword exit ?

Add documentation to the data elements of key words defined in the ABAP/4 Dictionary. The system displays this

documentation whenever a user presses F1 to get online help for a screen field.

16. How do SAP organizes its exits ?

SAP organizes its exits in packages that are called SAP enhancements. Each SAP enhancement can contain many

individual exits.

17. What is an add-on project ?

To take advantage of the exits available within standard R/3 applications, you need to create an add-on project.

This project lets you organize the enhancement packages and exits you want to use. The add-on project also allows

you to hang add-on functionality onto the exi t hooks contained with SAP enhancements.