Regarding the function modules

[Former Member]

Hi anybody pls tell me

what are the scenarios for the creation of function module

can you give me the some examples

thanks in advance

[Former Member]

Watch this thread

[Former Member]

<b>Function Modules</b>

Function modules are procedures that are defined in function groups (special ABAP programs with type F) and can be called from any ABAP program. Function groups act as containers for function modules that logically belong together. You create function groups and function modules in the ABAP Workbench using the Function Builder.

Function modules allow you to encapsulate and reuse global functions in the R/3 System. They are stored in a central library. The R/3 System contains a wide range of predefined function modules that you can call from any ABAP program. Function modules also play an important role in database updates and in remote communications between R/3 Systems or between an R/3 System and a non-SAP system.

Unlike subroutines, you do not define function modules in the source code of your program. Instead, you use the Function Builder. The actual ABAP interface definition remains hidden from the programmer. You can define the input parameters of a function module as optional. You can also assign default values to them. Function modules also support exception handling. This allows you to catch certain errors while the function module is running. You can test function modules without having to include them in a program using the Function Builder.

The Function Builder also has a release process for function modules. This ensures that incompatible changes cannot be made to any function modules that have already been released. This applies particularly to the interface. Programs that use a released function module will not cease to work if the function module is changed

[Former Member]

hi ,

to create a function module :

whenever u need to use some specific function again n again u can make a function for it.

like if u need to mutiply by 1000 so the foll code can be used.

eg

FUNCTION Z_INTO_1000.

*"----

---

""Local Interface:

*" IMPORTING

*" VALUE(INPUT) TYPE KWMENG

*" EXPORTING

*" VALUE(OUTPUT) TYPE KWMENG

*"----

---

output = input * 1000.

ENDFUNCTION.

regards,

sohi