Internal Program Environment diplays all internal/external objects and operations used by an SAP program

The Internal Program Environment simply allows you to see what internal objects (modules, subroutines, messages etc..), external objects (tcodes, reports, function modules etc..), internal operations (READ, MODIFY, DELETE) and external operations (SELCT, MODIFY etc..) a ABAP prgram uses.

To access it go to transaction SE38 and select the 'Utilities->Internal Program Environment' option


On the next screen simple choose the objects/operations you want to query