CMOD --> you can make a project activate, deactive etc..
SMOD --> to define the definition for any project.
CMOD is used to enhance the functional module
SMOD is used for SAP enhancement
SMOD is just to see all the enhancements in the sap system.
CMOD is the customer projects where enhancements are implemented. If you want to implement any enhancements then you will create a project and assign the enhancement and do the coding in exits.
To customize an existing SAP application we have been provided the user exits by SAP. These exits are packaged under enhancements. You choose an enhancement according to your requirements e.g. enhancement MM06E005 is used for adding custom field in me21/me21n. SAP has limited no of enhancements for any transactions, you have to choose only from them to cater your requiement you cant create them.
After selecting your enhancements you have to inherit them in your project in CMOD. Thereafter you do coding and other things like making your subscreens or adding fields to standard tables in respective exits.
To see the effect of your whole project you must activate each componnents of your enhancements.
( from)
Refer these threads for CMOD and SMOD
Badi is a OO concept.
You can do multiple implementation of BADI but user exit only once.
For badi use se18 and se19 t-code
for user exit use smod and cmod t-code
By using SE18---> Testing can be done .
SE19----> Testing cannot be done.
regards,
venkat
Bluesky
