SAP ABAP Table USMD0021 (Data Model: Permitted External Entity Types in Hierarchies) is used by

• Class (15)
• Function Module (1)
• PINF (3)
• Program (8)
• Table (2)
• View (2)

#	Object Type	Object Name	Object Description	Package	Structure Package	Software Component
1	Class	CL_MDG_DT_MODEL_ACCESS Method: DELETE_MODEL_DEFINITION	Configuration Workbench Access Class	MDG_DT_DATA_MODELING	MDG_FND	MDG_FND
2	Class	CL_MDG_DT_MODEL_ACCESS Method: READ_MODEL_DEFINITION	Configuration Workbench Access Class	MDG_DT_DATA_MODELING	MDG_FND	MDG_FND
3	Class	CL_MDG_DT_MODEL_ACCESS Method: GET_OBJSTAT_DIFF	Configuration Workbench Access Class	MDG_DT_DATA_MODELING	MDG_FND	MDG_FND
4	Class	CL_USMD4_ER_SUBSET Method: READ_RESTRICTED_DATA_MODEL	Map Data Model to Internal Graph	USMD4	MDG_FND	MDG_FND
5	Class	CL_USMD_DELETE_DATA_MODEL Method: DELETE_MODEL_DATA	Deletion of an Active Data Model	USMD1	MDG_FND	MDG_FND
6	Class	CL_USMD_MDF_MODEL_GENERATOR Method: CONVERT_TABLES	Generator for Data Model	USMD1B	MDG_FND	MDG_FND
7	Class	CL_USMD_MDF_MODEL_GENERATOR Method: FIND_HRY_ATTRIBUTES	Generator for Data Model	USMD1B	MDG_FND	MDG_FND
8	Class	CL_USMD_MDF_MODEL_GENERATOR Method: GET_GENERATED_TABL	Generator for Data Model	USMD1B	MDG_FND	MDG_FND
9	Class	CL_USMD_MDF_MODEL_GENERATOR Method: GENERATE_HRYNAME_STRUC	Generator for Data Model	USMD1B	MDG_FND	MDG_FND
10	Class	CL_USMD_MDF_MODEL_GENERATOR Method: GET_DEFINED_VERSIONS	Generator for Data Model	USMD1B	MDG_FND	MDG_FND
11	Class	CL_USMD_MDF_MODEL_GENERATOR	Generator for Data Model	USMD1B	MDG_FND	MDG_FND
12	Class	CL_USMD_MDF_MODEL_GENERATOR Method: SET_ROLES	Generator for Data Model	USMD1B	MDG_FND	MDG_FND
13	Class	CL_USMD_MDF_MODEL_GENERATOR Method: COPY_TO_OTHER_VERSION	Generator for Data Model	USMD1B	MDG_FND	MDG_FND
14	Class	CL_USMD_MDF_MODEL_GENERATOR Method: GET_META_INFO	Generator for Data Model	USMD1B	MDG_FND	MDG_FND
15	Class	CL_USMD_MODEL_CHECK Method: CHECK_AGAINST_ACTIVE_P	Checks Consistency of a Data Model	USMD1	MDG_FND	MDG_FND