Answer / always learner

One of the limitaiton of EXits(Enhancement) is that
parallel developments are not possibles . i,e if a
developer is using a particular enhancement then no other
developer can make use of that particular enhancement.

Whereas in BADI's parallel development are possible, since
BADI's using OOPs concept.

BADI's are nothing but METHODS, like Function modules.

There ar two kinds of Badi's. They are as follows :
1. Internal Use
2. External Use.

Inernal Use BADI's are implemented by SAP AG.
External BADI's are implemented by developer community.

Again BADI's are classified into two types:
1. Single Use
2. Multiple Use.

* Single use BADI's does not allow parallel developmetns

* Multiple Use BADIs allow parallel developments.

Tcodes : se18
se19 to implement a BADI

Answer / siri

User-exit: we can't impliment/assign same user-exit in
different projects.

BADI's: we can assign/use same badi's in several projects.

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