BTE (Theory) This document keeps the all theory regarding BTE (Business Transaction Event). What are BTE's in SAP ABAP ? BTE (Business Transaction Events) : BTE is one of the enhancement technique available in SAP that can be used by SAP, third party vendor(partner) and customer. BTE's are generally found in Financial Accounting module (FI-AP,FI-AR,FI-GL) but also available in APO,CRM,IS . BTE is called by a SAP program by a call to function OPEN_FI_PERFORM_<number> or OUTBOUND_CALL_<number>. It has a predefined interface that allows you to attach additional functionality in the form of a service function module. Two types of interfaces are available for implementing BTE's : 1)Publish and Subscribe interface 2)Process interface Publish and Subscribe interface: These interfaces inform external software that certain events have taken place in an SAP standard application and provide them with the data produced. The external softwar...