SAP ABAP Data Element NULLABLE (Null values allowed) is used by

• Function Module (3)
• Table (12)

#	Object Type	Object Name	Object Description	Package	Structure Package	Software Component
1	Function Module	DD_CREATE_TABLE VALUE(NULLABLE) LIKE DDFIELD-NULLABLE DEFAULT SPACE	Legt eine Tabelle auf DB an aus der uebergebenen Nametab	SDIC	BASIS	SAP_BASIS
2	Function Module	DD_MAP_NAMETAB_TO_DDFIELDS VALUE(NULLABLE) LIKE DDFIELD-NULLABLE DEFAULT 'X'	Maps the nametab to a table of the type DDFIELD	SDIC	BASIS	SAP_BASIS
3	Function Module	DD_NAMETAB_TO_DDFIELDS VALUE(NULLABLE) LIKE DDFIELD-NULLABLE DEFAULT 'X'	Creates the corresponding field structure to the nametab of a table	SDIC	BASIS	SAP_BASIS