A few interview questions on bapi, Badi, IDOC

Bapi-these are published programs which is used to upload data I
Nto sap system.

Badi-this is a program enhancement technique. SAP PR
Ovides Badi openings in the standard programs. You need to search for the s
Uitable Badi as ur requirement and then do the coding and plug in the progr
Am.

Userexit-it is also a program enhancement technique. Here also u
Need to find suitable userexit and code in ur program.

The main diff
Bet Badi and userexit is that in userexit U code in the standard SAP progra
M, hence any updation in the version of the standard program will lead to T
He loss of ur coding. But same is not the case of Badi. Here the code remai
NS outside the standard program.

2. Both BDC and bapi will work. For
Njoi sap transaction, prefer a bapi over a BDC