Here we would like to draw your attention to SE18 transaction code in SAP. As we know it is being used in the SAP BC-DWB (ABAP Workbench, Java IDE and Infrastructure in Basis) component which is coming under BC module (BASIS).SE18 is a transaction code used for Business Add-Ins: Definitions in SAP.
It comes under the package SECE.When we execute this transaction code, BADI_START is the normal standard SAP program that is being executed in background.
SAP SE18 menu path
See the possible menu paths to access the same report by avoiding entering the transaction code.
Tools → ABAP Workbench → Utilities → Business Add-Ins → Definition
Transaction SE18 technical data table
|Purpose||Business Add-Ins: Definitions|