SAP ABAP Class CL_WLF_COLUMN_TREE (Column Tree Display) is using

• Class (104)
• Data Element (60)
• Table/Structure Field (317)
• Function Module (4)
• Message Class (4)
• Message Number (10)
• Class Method (140)
• Table (47)

#	Object Type	Object Name	Object Description	Note
1	Message Class	WZRE_REUSE	Messages
2	Message Class	WZRE_REUSE	Messages
3	Message Class	WZRE_REUSE	Messages
4	Message Class	WZRE_REUSE	Messages