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 exit hooks contained with SAP enhancements.
Showing posts with label SAP ABAP Interview Questions. Show all posts
Showing posts with label SAP ABAP Interview Questions. Show all posts
Saturday, March 15, 2008
What is a function module exit in sap?
Adding functionality to R/3 applications. Function module exits play a role in both menu and screen exits.
What is a screen exit in sap?
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.
What are the various types of customer exits ?
Menu exits
Screen exits
Function module exits
Keyword exits
when do you opt for modification in sap?
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
What are the advantages of enhancements IN SAP?
Do not affect standard SAP source code
Do not affect software upgrades
What are the disadvantages of modification ?
Modifying standard code can lead to errors
Modifications mean more work during software upgrades
What is SSCR ?
SSCR (SAP Software Change Registration) is a procedure, for registering all manual changes to SAP source coding and SAP Dictionary objects.
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
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).
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.
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
What are user exits?What is involved in writing them? What precautions are needed?
User defined functionality included to predefined SAP standards. Point in an SAP program where a customer's own program can be called. In contrast to customer exits, user exits allow developers to access and modify program components and data objects in the standard system.
On upgrade, each user exit must be checked to ensure that it conforms to the standard system.
There are two types of user exit:
User exits that use INCLUDEs.
These are customer enhancements that are called directly in the program.
User exits that use tables.
These are used and managed using Customizing.
Should find the customer enhancements belonging to particular development class.
Thursday, December 20, 2007
What is sequence of event triggered in report?
1) Initialization
2) At Selection-Screen
3) Start-of-Selection
4) Get
5) Get Late
6) End-of-Selection
7) Top-of-Page
8) End-of-Page
9) At Line Selection
10) At User Command
11) At PF (nn)
What is the difference between Primary key and Unique Key?
Primary Key – It can accepts 0 value and cannot be NULL.
Unique Key – It can be NULL
What are the various types of selection screen event?
SELECTION-SCREEN BEGIN OF BLOCK ABC WITH FRAME TITLE T01.
SELECTION-SCREEN BEGIN OF SCREEN 500 AS WINDOW.
CALL SELECTION-SCREEN 500 STARTING AT 10 10.
What is the difference between 'Select single * ' and 'Select upto 1 rows'?
‘Select single *’ – The result of the selection should be a single entry. If it is not possible to identify a unique entry, the system uses the first line of the selection. For e.g.
DATA : ITAB TYPE ZREKHA_EMP.
SELECT SINGLE * FROM ZREKHA_EMP INTO ITAB
WHERE EMPNO = ‘00101’ AND DEPTNO = ‘0010’.
WRITE : / ITAB-EMPNO, ITAB-EMPNAME,ITAB-DEPTNO.
Select upto 1 rows -
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