SAP ABAP Class CL_USMD_MDF_KEY_HANDLER (Treatment of Keys at Runtime) is using

• Class (137)
• Data Element (92)
• Table/Structure Field (291)
• Function Module (6)
• Interface (160)
• Message Class (9)
• Message Number (18)
• Class Method (665)
• Table (115)

#	Object Type	Object Name	Object Description	Note
1	Message Class	USMD	General Messages
2	Message Class	USMD	General Messages
3	Message Class	USMD1A	Messages: Abstraction Layer
4	Message Class	USMD1A	Messages: Abstraction Layer
5	Message Class	USMD1A	Messages: Abstraction Layer
6	Message Class	USMD1A	Messages: Abstraction Layer
7	Message Class	USMD1B	Messages: MDF Connection
8	Message Class	USMD1B	Messages: MDF Connection
9	Message Class	USMD2	Master Data: UI Modeling