Here is a list of important 40 transaction codes used with SAP BC-TWB component (SAP Test Workbench in Basis) coming under SAP BC Module. You will get more technical details of each of these SAP BC-TWB tcodes by clicking on the respective tcode name link.
Menu Path : Tools → ABAP Workbench → Test → Test Workbench → Test Tools → Extended CATT
Menu Path : Tools → ABAP Workbench → Test → SQL Trace
Menu Path : Tools → ABAP Workbench → Test → Test Workbench → Test Organizer → Test Catalog Management
Menu Path : Tools → ABAP Workbench → Test → Test Workbench → Test Organizer → Test Plan Management
Menu Path : Tools → ABAP Workbench → Test → Test Workbench → Test Organizer → Information System
Menu Path : Tools → ABAP Workbench → Test → Test Workbench → Test Organizer → Central Settings
Menu Path : Tools → ABAP Workbench → Test → Test Workbench → Test Performance
Menu Path : Tools → ABAP Workbench → Test → Test Workbench → Test Repository