4 Replies Latest reply: Nov 22, 2007 5:17 AM by TUWUHSIH WINEDYA RSS

what is the use of function groups.

jeevan rajsekhar p
Currently Being Moderated

hi Sir/ Madam, this is jeevan. I am an ABAP trainee.i have a doubt will u please help me out.what is the use of function groups.

  • Re: what is the use of function groups.
    Currently Being Moderated

    se37 funcation group used for funcation module store on sap library.



    Function Groups

    Function groups are containers for function modules. You cannot execute a function group. When you call a function module, the system loads the whole of its function group into the internal session of the calling program (if it has not already been loaded). For further information, refer to Organization of External Procedure Calls.


    The following diagram shows the structure of a function group: The name of a function group, fgrpcan be up to 26 characters long. This is used by the system to create the components of the group (main program and corresponding include programs). When you create a function group or function module in the Function Builder , the main program and include programs are generated automatically.




    The main program SAPLfgrp contains nothing but the INCLUDE statements for the following include programs:


    キ        LfgrpTOP. This contains the FUNCTION-POOL statement (equivalent for a function group of the REPORT or PROGRAMstatement) and global data declarations for the entire function group.


    キ        LfgrpUXX. This contains further INCLUDEstatements for the include programs LfgrpU01, LfgrpU02,... These includes contain the actual function modules.


    キ        The include programs LfgrpF01, LfgrpF02,... can contain the coding of subroutines that can be called with internal subroutine calls from all function modules of the group.


    The creation of these INCLUDE programs is supported from the ABAP Workbench by forward navigation (for example creation of a subroutine include by double clicking on the name of a subroutine in a PERFORM statement within a function module).


    You cannot declare a COMMON PART in a function group. Function groups have their own table work areas (TABLES). Function groups encapsulate data. In this respect, they are a precursor of ABAP Objects (see From Function Groups to Objects ).


    All of the function modules in a function group can access the global data of the group. For this reason, you should place all function modules that use the same data in a single function group. For example, if you have a set of function modules that all use the same internal table, you could place them in a function group containing the table definition in its global data.


    Function groups, like executable programs and module pools, can contain screens (selection screens and lists) as components. User input is processed either in dialog modules or in the corresponding event blocks in the main program of the function group. There are special include programs in which you can write this code. In this way, you can use function groups to encapsulate single screens or screen sequences.

  • Re: what is the use of function groups.
    siva chalasani
    Currently Being Moderated


    Agroup of function modules will be stored centrally in a function group.

    is nothing but a group of function modules.




  • Re: what is the use of function groups.
    Irfan Hussain
    Currently Being Moderated


    A function group contains a set of logically related function modules.

    Here global decelration is done for all function modules to avoid inconsistences.


    Pls reward sutiable answers.




  • Re: what is the use of function groups.
    Currently Being Moderated

    Hi Jeevan,

    In SAP, it is a function group - instead of function - that is loaded into active memory.

    Function ( or function module ) is the one that you call from the program to do things.


    A function group contains functionally related function modules, global variables and procedures .


    To display / edit function module you use SE37,

    To display / edit function group  you use SE80 .


    Please mark the thread answered and reward point to useful answers.



    TS Winedya