pn07 enhance 21

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Introduction Enhancements

Introduction

Enhancement management

Function module

Menu exits

Screen exits

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Levels of Changes

SAP STANDARD

Standard R/3

ENHANCEMENTS

CUSTOMER

PROGRAMS

CUSTOMIZATION

PERSONALIZATION

MODIFICATIONS

ENHANCEMENTS

CUSTOMER DEVELOPMENTS

ASAP

ABAP

Workbench

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Levels of Changes – ABAP Workbench

SAP STANDARD

Standard R/3

ENHANCEMENTS

CUSTOMER

PROGRAMS

MODIFICATIONS

ENHANCEMENTS

CUSTOMER DEVELOPMENTS

ABAP

Workbench

Non-Registered

Assisted modifications

* ABAP DICTIONARY *

PROGRAM * MENU *

SCREEN

WITH and WITHOUT reference

to SAP Objects

U

S

E

R

E

X

I

T

S

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Enhancements


The R/3 Enhancement concept allows you to add your own

functionality to SAP’s standard business applications

without having to modify the original applications

Program enhancements permit you to execute additionalprogram logic in SAP application programs

SAP creates customer exits for specific programs, screens,

and menus within standard R/3 applications.

These customer exits act as hooks. You can hang

your own add-on functionality onto these hooks.

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Advantages of Enhancements


You can add your own functionality with out

changing standard SAP source code.

These changes are stored in customer name

space so do not affect software updates.

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Program Enhancements: How they Work


*** SAP program ****************************** PROGRAM <name of SAP

*** SAP program ****************************** PROGRAM <name of SAP

<Call enhancement> <Call enhancement> <Object in customer namespace> <Object in customer namespace>

Customer Exit function module Exit function module Business Transaction Function module Function module Business add- Method Method

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Program Enhancement Types


Menu Exits

Add items(menu entries) to the pull down menus in standard

SAP applications.

Screen Exits

Add fields to sub screens in R/3 applications.

Function Module Exits

Add functionality in R/3 application through the pre defined

interfaces of function module.

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HOW TO LOCATE HAVING EXITS


Locating Applications that have Exits

From the ABAP Workbench menu

Uti l i t ies Enhancements Project management (CMOD)

From here, choose

Uti l i t ies SAP enhancements

From the Application Hierarchy to search for exits that are

available for a particular application area.

ABAP Workbench Overview App l icat ion hierarchy (SE81)

Marks the application area and choose In form at ion System

On the next screen follow the path

R/3 Reposi tory Inform at ion Sys tem Envi ronment Exi t techniques

Custom er Exists

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Creating Customer Enhancement Project


Project Management o f SAP

Project Create

Change Display

Sub-

Name of the enhancement project Name of the enhancement project

Create Create Attributes Enhancement

Component Documentatio

Enhancement Project

<project> Project Descript.

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Factors for creating an add-on project.


Factors you need to keep in mind when you create an

add-on project.

SAP enhancement package and the customer exitsappear in one project only.

You must activate your add-on project.

All the enhancements & exits get activated

together with the project.

It is not possible to activate exits individually.

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Activating Enhancement Projects


Project Management o f SAP

Project

Sub- Attributes Enhancement

Component Documentatio

Create

Change Display

Activation Activation

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Transporting Projects


Development

Activate Activate Transport

request

Next

Activate Activate E E C C E E

C C C C E E C C

E E C C C C

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Function Module Exit: Process Flow


X function

Application

Exit function

EXIT_<prog_name>_0

Include in Include in customer customer

CALL CUSTOMER-

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Summary: Function Module Exits


SAP Application Program ***Global data*** DATA: gl_field... CALL CUSTOMER- FUNCTION '001'

EXPORTING

i_vars = gl_field.

X Function Group XAAA

FUNCTION exit_prg_001. *IMPORTING i_vars

ENDFUNCTION.

ABAP ABAP ABAP ABAP Screens Screens 9000 9000

9100 9100 *INCLUDE ZXaaaU01 *INCLUDE ZXaaaU01

<additional <additional processing logic> processing logic>

INCLUDE ZXaaaU01. INCLUDE ZXaaaU01.

CALL SCREEN 9000. CALL SCREEN 9000.

Text elements Text elements Graphical user interface

Graphical user interface

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Menu Enhancements: SAP and the Customer


SAP CUSTOMER

Menu exits Function code

Text Enhancement

Documentation

Function 1 Function 2 Function 3

Function 1 Function 2

Function 3

Menu 1 Menu 2 Menu 2 Menu 3

Cust. function Cust. function

Function 1 Function 2 Function 3

Function 1 Function 2

Function 3

Menu 1 Menu 2 Menu 2 Menu 3

(Icons)

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Menu Exits and Function Module Exits


PROGRAM <program_name>. DATA ok_code LIKE sy-ucomm. ...

CASE ok_code. WHEN 'DISP'. ...

... ENDCASE.

PROGRAM <program_name>. DATA ok_code LIKE sy-ucomm. ...

CASE ok_code. WHEN 'DISP'.

...

... ENDCASE.

WHEN '+ABC'. WHEN '+ABC'. CALL CUSTOMER-FUNCTION '001' CALL CUSTOMER-FUNCTION '001'

EXPORTING EXPORTING <i_variables> <i_variables> IMPORTING IMPORTING <e_variables>. <e_variables>.

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Screen Exits Overview


SAP CUSTOMER

SAP R/3 Field 2 Field 1

SAP R/3 Field 2 Field 1

Field Y Field X

Field Z

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Calling Customer Subscreens


SAP Application

PROCESS BEFORE OUTPUT. ODULE ...

ODULE ...

X Function Group

PROCESS BEFORE OUTPUT. PROCESS BEFORE OUTPUT. ODULE ... ODULE ... ODULE ... ODULE ...

abcd

Screen Screen ScreenScreen

CALL CUSTOMER-SUBSCREEN abcd CALL CUSTOMER-SUBSCREEN abcd INCLUDING 'SAPLXAAA' '1234'. INCLUDING 'SAPLXAAA' '1234'.

PROCESS AFTER INPUT. ODULE ... ODULE ... CALL CUSTOMER-SUBSCREEN abcd. CALL CUSTOMER-SUBSCREEN abcd.

PROCESS AFTER INPUT. PROCESS AFTER INPUT. ODULE ... ODULE ... ODULE ... ODULE ...

S f S

S f S

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Transporting Data to Subscreens


SAP Application

ODULE...

CALL

CUSTOMER- SUBSCREEN...

***Global data*** ATA: gl_field... CALL CUSTOMER-

FUNCTION '001'

X Function Group

UNCTION exit_prg_001. *IMPORTING i_vars NDFUNCTION. ***Global data*** ***Global data*** ATA: ATA: gl_var... gl_var...

abcd

XPORTING XPORTING i_vars = gl_field. i_vars = gl_field.

gl_var = i_vars. gl_var = i_vars.

Screen Screen ABAP ABAP ABAP ABAP Screen Screen

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Transporting Data from Subscreens


SAP Application

CALLCUSTOMER- SUBSCREEN... ODULE...

***Global Data*** DATA: gl_field...

CALL CUSTOMER- FUNCTION '002'

X-Function Group

FUNCTION exit_prg_002. *EXPORTING e_vars ENDFUNCTION.

***Global Data*** ***Global Data*** DATA: DATA: gl_var... gl_var...

IMPORTING IMPORTING i_vars = gl_field. i_vars = gl_field. gl_var = e_vars. gl_var = e_vars.

Screen Screen ABAP ABAP ABAP ABAP Screen Screen

abcd

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Enhancements using Customer Exits: Summary

Explain how enhancements work with

customer exits

Enhance programs using function moduleexits

Enhance menus using menu exits

Enhance screens using screen exits

Explain how the different types of

enhancement interact

pn07 enhance 21

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