BAPI BAPI is a standard interface that is available in every SAP system. This interface has been designed to access data from the third system (SAP ERP, SAP CRM, other systems). BAPI is a remotely activated function module and can be called by applications that are implemented, for example, in Java. Additionally, the BAPI architecture allows the use of business logic, validation, and checking permissions, which are available in the business object level. BAPI is registered in the Business Object Repository ( BOR ). Implementing BAPI BAPI is relatively easy to implement. However, the programmer must remember some important rules when creating the interface. We will describe these rules next. The first step of implementing BAPI is to create a function module in SE37 Tcode (transaction code ). To do this, navigate to Function module | Attributes , and select the options that are displayed in the following screenshot: If a user requires input data for