SAP BAPI (Business API) Definition: BAPI is a set of interfaces that allow third-party developers to access to processes and data in SAP R/3 Modules.
In this document author collects various information, creates BAPI tutorials with screenshots, and states important points that every beginner should know. Not covered in this document but it will be also useful for you to check and download SAP BAPI List. Following are some highlights from this 41 pages BAPI guide material:
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