SAP ABAP Program REAABR00SIBI (Individual bill) is using

• Data Element (1)
• Table/Structure Field (91)
• Function Module (19)
• Message Class (4)
• Message Number (21)
• Program (15)
• Table (18)

#	Object Type	Object Name	Object Description	Note
1	Message Class	AJ	Billing program
2	Message Class	E9	General IS-U Error Messages
3	Message Class	EB	IS-U invoicing
4	Message Class	EL	IS-U meter reading data processing