Here we would like to draw your attention to BF34 transaction code in SAP. As we know it is being used in the SAP CA-GTF (General Application Functions in CA) component which is coming under CA module (Cross Application).BF34 is a transaction code used for Customer Modules per Event in SAP.
It comes under the package BBTE.
Transaction BF34 technical data table
|Purpose||Customer Modules per Event|