Answer Posted / sandeep

RFC
RFC is a Remote function call function module. we sent data from one system to other system by using of RFC.

RFC consists of two interfaces :

A calling interface for ABAP Programs
A calling interface for Non-SAP programs.


BAPI
BAPI (Business Application Programming Interface) is a set of interfaces to object-oriented programming methods that enable a programmer to integrate third-party software into the proprietary R/3 product from SAP.

For specific business tasks such as uploading transactional data, BAPIs are implemented and stored in the R/3 system as remote function call (RFC) modules.

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