SAP ABAP Program CNV_20000_BELNR_EXT_MAPPING (EXternal Document mapping..) is using

• Class (3)
• Data Element (1)
• Table/Structure Field (22)
• Function Module (2)
• Class Method (3)
• Table (6)
• View (1)

#	Object Type	Object Name	Object Description	Note
1	Function Module	CONVERSION_EXIT_ALPHA_INPUT	Conversion exit ALPHA, external->internal
2	Function Module	NUMERIC_CHECK	Editing and checking numeric fields