user exit & enhancement

[Former Member]

hi abaper's

i am new in abap, i need study material for user exit & enhancement topic. so pls give me study material for this topic.

points will be rewared.

regards

[Former Member]

Hi

Hi

USER EXIT

EXIT s are nothing but the R/3 Enhancements which allows you to add your own functionality to SAP’s standard business applications without having to modify the original applications.

Purpose

To introduce the techniques of enhancement in standard SAP system. SAP creates customer exits for specific programs, screens, and menus within standard R/3 applications. These exits do not contain any functionality. Instead, the customer exits act as hooks. You can hang your own add-on functionality onto these hooks.

Use

They do not affect standard SAP source code.

When you add new functionality to your SAP System using SAP’s exits, you do not alter the source code of standard SAP programs in any way. The code and screens you create are encapsulated as separate objects. These customer objects are linked to standard applications, but exist separately from SAP’s standard software package.

They do not affect software updates.

When you add new functionality to your SAP System using SAP’s exits, your objects (called customer objects) must adhere to strict naming conventions. When it comes time to upgrade a to a new software release, customer objects’ names ensure that they will not be affected by any changes or new additions to the standard software package.

Challenges

Customer exits are not available for all programs and screens found in the SAP System.

Modifications

Any change made to an SAP object in a customer system is called a modification. Customers usually modify their systems for one of two reasons. Either they make changes to the SAP standard in order to adjust the R/3 System to their specific business needs (actual modifications), or they alter individual SAP objects in order to correct an error (as recommended in an SAP error note).

You should only modify the SAP standard if the modifications you want to make are absolutely necessary for optimizing work flow in your company. Be aware that good background knowledge of application structure and flow are important prerequisites for deciding what kind of modifications to make and how these modifications should be designed.

need

ABAP DICTIONARY

Table Enhancements: There are two ways that you can add additional fields to tables without modifying your system.

Append Structures:

Append structures allow you to enhance tables by adding fields to them that are not part of the standard. With append structures, customers can add their own fields to any table or structure they want.

Append structures are created for use with a specific table. However, a table can have multiple append structures assigned to it.

Customizing Includes:

If customers know in advance that one of the tables or structures delivered to them by SAP needs to have customer-specific fields added to it, an SAP application developer can include these fields in the table using a Customizing include statement.

The same Customizing include can be used in multiple tables or structures. This provides for consistency in these tables and structures whenever the itself include is altered.

Append structures allow you to attach fields to a table without actually having to modify the table itself.

Append structures may only be assigned to a single table. A table may, however, have several append structures attached to it. Whenever a table is activated, the system searches for all active append structures for that table and attaches them to the table. If an append structure is created or changed and then activated, the table it is assigned to is also activated, and all of the changes made to the append structure take effect in the table as well.

You can use append structures in ABAP programs just as you would any other structure.

Note: When you copy tables that have append structures attached to them, the fields that were found in the append structure of the original table become part of the actual body of the target table.

Some of the tables and structures delivered with the R/3 standard contain special include statements calling Customizing includes. These are often inserted in those standard tables that need to have customer-specific fields added to them.

In contrast to append structures, Customizing includes can be inserted into more than one table. This provides for data consistency throughout the tables and structures affected whenever the include is altered.

Customizing include programs are part of the customer namespace: all of their names begin with 'CI_'. This naming convention guarantees that nonexistent Customizing includes do not lead to errors. No code for Customizing includes is delivered with the R/3 standard.

You create Customizing includes using special Customizing transactions. Some are already part of SAP enhancements and can be created by using project management (see the unit on 'Enhancements using Customer Exits').

The Customizing include field names must lie in the customer namespace just like field names in append structures. These names must all begin with either 'YY' or 'ZZ'.

When adding the fields of a Customizing include to your database, adhere to same rules you would with append structures.

ABAP DICTIONARY

Field Exits:

Field exits take you from a screen field with a data element reference to a function module. Field exits can be either global or local.

Field exit function modules adhere to the following naming convention:

prefix: FIELD_EXIT_

name: <data element name>_

suffix (optional): 0 to 9, A to Z

Text Enhancements:

Possible text enhancements include customer keywords and customer documentation of data elements.

Text enhancements differ from other application enhancements in that they take effect globally in all related SAP applications after activation (global enhancements).

Customer Exits

Function Module Exits

Menu Exits

Screen Exits

Function Module Exits

Function module exits add functions to R/3 applications. Function module exits play a role in both menu and screen exits. When you add a new menu item to a standard pull down menu, you use a function module exit to define the actions that should take place once your menu is activated. Function module exits also control the data flow between standard programs and screen exit fields.

Menu Exits

Menu exits add items to the pull down menus in standard SAP applications. You can use these menu items to call up your own screens or to trigger entire add-on applications.

SAP creates menu exits by defining special menu items in the Menu Painter. These special entries have function codes that begin with "+" (a plus sign). You specify the menu item’s text when activating the item in an add-on project.

Screen Exits

Screen exits add fields to screens in R/3 applications. SAP creates screen exits by placing special sub screen areas on a standard R/3 screen and calling a customer sub screen from the standard screen’s flow logic.

Please go through the following link which will help you understand the exits in a much better way:

http://help.sap.com/saphelp_nw04/helpdata/en/bf/ec07a25db911d295ae0000e82de14a/content.htm

http://www.sap-img.com/abap/what-is-the-difference-between-smod-and-cmod.htm

http://sap.niraj.tripod.com/id21.html

http://help.sap.com/saphelp_nw04/helpdata/en/c8/1975cc43b111d1896f0000e8322d00/frameset.htm

http://www.sap-img.com/ab038.htm

User Exits.

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http://www.erpgenie.com/sap/abap/code/abap26.htm

http://www.sap-img.com/abap/a-short-tutorial-on-user-exits.htm

http://www.sapgenie.com/abap/code/abap26.htm

http://www.sap-img.com/abap/what-is-user-exits.htm

http://wiki.ittoolbox.com/index.php/HOWTO:Implement_a_screen_exit_to_a_standard_SAP_transaction

http://www.easymarketplace.de/userexit.php

http://www.sap-img.com/abap/a-short-tutorial-on-user-exits.htm

http://www.sappoint.com/abap/userexit.pdfUser-Exit

customer exits

https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/f1a7e790-0201-0010-0a8d-f08a4662...

Menu Exit.

http://www.sappoint.com/abap/spmp.pdf

http://www.sappoint.com/abap/userexit.pdf

http://www.sapdevelopment.co.uk/enhance/mod_sapmenu.htm

http://www.sapdevelopment.co.uk/enhance/enhancehome.htm

1. Previously there were only user-exits.

2. Then came the concept of customer-exits.

3. user exits were nothing but subroutines

FORM/PERFORM

called from standard programs.

4. The FORM defintion was placed inside

an empty include file.

5. So It was called EVERYTIME.

and we need to MODIFY/REPAIR the

standard include .

6. Then it came with concept of customer-exit

7. It consists of calling a FUNCTION MODULE,

which is called only if

the user-exit is ACTIVATED (other wise not called)

In this case, the code in put inside

a pre-defined Z include.

8. Functionality of both is same, howerver

we can note the following important differences

a) Customer exit is called only if activated.

(hence, it does not waste resources)

b) in customer exit, REPAIR does not happen

to the standard include.

Exits are basically the hooks whcih SAP has provided to add your own code.

[Former Member]

Exits are basically the hooks whcih SAP has provided to add your own code. There are two types of Exits:

1. Customer exits: Implemented as Function Modules within z includes. Anybody can change it and no access key is required.

2. User Exit: Implemented as subroutines within includes (any include except y or z includes). You need access for the specific include and then you can any subroutine (user exit) within that Include.

BADIs are the enhanced version of user exits where the same logic is implemented via classes and object (OOP)

Enchancement point is the latest once introduces with ECC6.0 . Not very sure about that but you can change it without any access key.

Please go through the following link which will help you understand the exits in a much better way:

http://help.sap.com/saphelp_nw04/helpdata/en/bf/ec07a25db911d295ae0000e82de14a/content.htm

http://www.sap-img.com/abap/what-is-the-difference-between-smod-and-cmod.htm

http://sap.niraj.tripod.com/id21.html

http://help.sap.com/saphelp_nw04/helpdata/en/c8/1975cc43b111d1896f0000e8322d00/frameset.htm

http://www.sap-img.com/ab038.htm

User Exits.

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http://www.erpgenie.com/sap/abap/code/abap26.htm

http://www.sap-img.com/abap/a-short-tutorial-on-user-exits.htm

http://www.sapgenie.com/abap/code/abap26.htm

http://www.sap-img.com/abap/what-is-user-exits.htm

http://wiki.ittoolbox.com/index.php/HOWTO:Implement_a_screen_exit_to_a_standard_SAP_transaction

http://www.easymarketplace.de/userexit.php

http://www.sap-img.com/abap/a-short-tutorial-on-user-exits.htm

http://www.sappoint.com/abap/userexit.pdfUser-Exit

customer exits

https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/f1a7e790-0201-0010-0a8d-f08a4662...

Menu Exit.

http://www.sappoint.com/abap/spmp.pdf

http://www.sappoint.com/abap/userexit.pdf

http://www.sapdevelopment.co.uk/enhance/mod_sapmenu.htm

http://www.sapdevelopment.co.uk/enhance/enhancehome.htm

USER EXIT

http://www.sap-img.com/abap/a-short-tutorial-on-user-exits.htm

http://www.sapgenie.com/abap/code/abap26.htm

http://www.sap-img.com/abap/what-is-user-exits.htm

http://wiki.ittoolbox.com/index.php/HOWTO:Implement_a_screen_exit_to_a_standard_SAP_transaction

http://www.easymarketplace.de/userexit.php

http://www.sap-img.com/abap/a-short-tutorial-on-user-exits.htm

http://www.sappoint.com/abap/userexit.pdfUser-Exit

http://www.sap-img.com/ab038.htm

http://help.sap.com/saphelp_46c/helpdata/en/64/72369adc56d11195100060b03c6b76/frameset.htm

http://www.sap-img.com/abap/a-short-tutorial-on-user-exits.htm

http://www.sap-img.com/abap/what-is-user-exits.htm

http://expertanswercenter.techtarget.com/eac/knowledgebaseAnswer/0,295199,sid63_gci982756,00.html

Field Exit

If you are in 4.7 and up follow this

1. Run report RSMODPRF

2. Run on the selection screen

3. In list Field Exit > Create

4. Give your data element

5.System will generate the FM FIELD_EXIT_XXXXX

6. Activate it.

7. Select your field exit and assign to your program and screen

8. Select again .. Field exit > Activate

If you are in version below 4.7

1. CMOD

2. Go to >Text enhancment > Field exit

then follow the same step from 3 onwards as given above.

Menu Exit

Procedure for Creating MENU Exits.

1) To get into Area Menu Maintenance Screen Type SE43 T.Code in Command

Line.

2) In Area Menu Paramenter type 'S000' (S triple Zero)

3) Then Press Change Icon in Application Tool Bar. Then It may ask for

Access Key or it may display "Specify Processing mode" window. If it ask

for the Access Key Check for the availability of OSS Note and apply to open

Standard SAP Menu to include MENU Exits. Otherwise, if it display "Specify

Processing mode" window with Three Push Button. In which select "Change" and

proceed further.

4) Then it will display "Information" window with the following information

"Caution : The Original Language of the structure is German (editing lang. :

English) ". Then press "Enter Key to proceed further.

5) Then you will get into "Edit Area Menu S000".

6) for eg:- Expand Tools Menu.

7) Then Press ABAP Workbench <Icon>.

😎 Then you will get into ABAP Workbench Menu Tree.

9) Then Expand Utilities Menu.

10) In the last line you will find one MENU EXIT Provision to include your

own menu. "Node Text Not Found" This text can be change by double Clicking

that. There you can find the T.Code. Here for Eg:- "+DW4".

11) for eg: - Here change the Text to "Sample Menu Exit" and then note down

the T.Code "+DW4".

12) Then Save with Change Request Number and come out of Transaction SE43.

13) Then Goto Transaction SE93.

14) Then type T.Code "+DW4" and press Create.

15) Then proceed further to create transaction called "+DW4".

I hope this could help you in Creating Menu Exit...

Creating menu exits

http://help.sap.com/saphelp_nw04/helpdata/en/c8/19762743b111d1896f0000e8322d00/content.htm

http://help.sap.com/saphelp_nw2004s/helpdata/en/83/7a18cbde6e11d195460000e82de14a/frameset.htm

Reward points if useful.

[Former Member]

thanks