SAP ABAP Data Element USMD_TAB_XFIELD (ABAP Dictionary Structure for X-Fields) is used by

• Class (2)
• Interface (1)
• PINF (3)
• Table (5)
• View (2)

#	Object Type	Object Name	Object Description	Package	Structure Package	Software Component
1	Table	MDG_DT_API_S_ENTITY - TAB_XFIELD	Enitiy for Design Time API.	MDG_DT_DATA_MODELING	MDG_FND	MDG_FND
2	Table	MDG_DT_S_ENTITY - TAB_XFIELD	Structure for Entity Types	MDG_DT_DATA_MODELING	MDG_FND	MDG_FND
3	Table	USMD0020 - TAB_XFIELD	Data Model: Entity Types	USMD1	MDG_FND	MDG_FND
4	Table	USMD_S_DDIC_SOURCE_XFIELD - TAB_XFIELD	DDIC Source of Field	USMD1A	MDG_FND	MDG_FND
5	Table	USMD_S_USMD0020 - TAB_XFIELD	Data of an Entity Type	USMD1	MDG_FND	MDG_FND