SAP ABAP Table TTREEN (List of node types to be displayed for a structure) is used by

• Class (3)
• Function Module (20)
• Program (9)

#	Object Type	Object Name	Object Description	Package	Structure Package	Software Component
1	Class	CL_HIER_REF_FACTORY Method: CREATE_TREE_NEW	Creates Reference Objects in Structure Repository	SQADB	BASIS	SAP_BASIS
2	Class	CL_HIER_REF_TREE Method: SAVE	Reference Object: Structure	SQADB	BASIS	SAP_BASIS
3	Class	CL_REVIEW_NODE_OLD Method: GET_NODE	Structure for Review	SQADB	BASIS	SAP_BASIS