SAP ABAP Function Module /BA1/F4_DB_CHECK_EXTNO (Check whether external number exists) is using

• Class (1)
• Data Element (2)
• Table/Structure Field (7)
• Interface (1)
• Message Class (1)
• Message Number (1)
• Class Method (1)

#	Object Type	Object Name	Object Description	Note
1	Class	CX_ROOT	Abstract Superclass for All Global Exceptions