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• 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 t hooks contained with SAP enhancements.

SAP ORGANIZES its EXITS in packages that are CALLED SAP enhancements. Each SAP enhancement can contain many individual exits.

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

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.

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.

ADDING FUNCTIONALITY to R/3 applications. Function MODULE exits PLAY a role in both menu and screen exits.

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

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.

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.

ADDING ITEMS to the pull down menus in standard R/3 APPLICATIONS.

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

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.

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.

• Do not affect standard SAP SOURCE code
• Do not affect SOFTWARE UPGRADES

• Modifying STANDARD CODE can lead to errors
• Modifications MEAN more WORK during software UPGRADES

• Modifications MEAN MAKING changes to the SAP STANDARD functionality.
• ENHANCEMENTS mean adding some functionality to SAP standard functionality.

SSCR (SAP SOFTWARE Change Registration) is a procedure, for registering all MANUAL changes to SAP SOURCE coding and SAP Dictionary OBJECTS.

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

Creating customer-specific OBJECTS WITHIN the customer NAME RANGE.

Creating customer-specific objects within the customer name range.

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).

Enhancements using customer exits:

The standard APPLICATIONS do not offer some of the functionality you NEED. The R/3 enhancement CONCEPT allows you to add your own functionality to SAP's standard BUSINESS applications.

The standard applications do not offer some of the functionality you need. The R/3 enhancement concept allows you to add your own functionality to SAP's standard business applications.

Customizing is the setting of SYSTEM PARAMETERS via SAP's own interface.

Customizing is the setting of system parameters via SAP's own interface.

• Customizing
• ENHANCEMENTS to the SAP STANDARD
• MODIFICATIONS to the SAP Standard
• Customer Development