FUNCTION MODULE , ZTABLE & USER EXIT

[Former Member]

Hi

Pls define & explain the followings

1) Function Module

2) ZTABLE &

3) USER EXIT.

Regards,

[Former Member]

Hi,

<b>Function modules</b> are ABAP routines that are administered in a central function library. They apply across applications and are available throughout the system. You must assign function modules to a function pool that is called a function group. A function group is nothing but a container for the function modules

Z tables are what you create to have support additional functionalities. Like we have a ztable used in an email program attached with to a sales order. Whenever the a customer places order an email confirmation goes to him depending on the entries in the Ztable. We have some selection criteria here.

Hope it helps. Please reward is useful.

Thanks & Regards

Sadhu Kishore

[Former Member]

Hi Nabeel,

Function module:

Please refer to the link for info http://help.sap.com/saphelp_nw2004s/helpdata/en/9f/db988735c111d1829f0000e829fbfe/content.htm

User exit:

User exits allow us to add our own functionality to SAP standard program

without modifying it . These are implemented in the form of subroutines and hence are also known as FORM EXITs. The userexits are generally collected in includes and attached to the standard program by the SAP.

Display the program where you are searching for and exit and search for CALL CUSTOMER-EXIT

If you know the Exit name, go to transaction CMOD.

Choose menu Utillities->SAP Enhancements. Enter the exit name and press enter.

You will now come to a screen that shows the function module exits for the exit.

TYPES OF EXITS

1)MENU EXITS

2)FUNCTION EXITS

3)TABLE EXITS

4)SCREEN EXITS

5)KEYWORD EXITS

6)FIELD EXITS

We use SAP transactions CMOD and SMOD to manage exits. Before implementing an exit , it is required to create the project by using CMOD

selecting the enhancement e.g. V45A0002 and selecting the component

(one which fulfills our need) i.e the exit which will be implemented in SMOD and after coding has been done the project has to be activated.

An exit can be coded only once.

(taken from one of earlier posts)

Ztable:

Ztable are customized tables which are created to hold data which could not be available from SAP tables.

Regards,

Please award points if useful