SAP ABAP Program REAABR00MABI (Mass billing) is using

• Data Element (1)
• Table/Structure Field (59)
• Function Module (7)
• Message Class (3)
• Message Number (15)
• Program (11)
• Table (8)

#	Object Type	Object Name	Object Description	Note
1	Message Class	AH	IS-U billing (master data)
2	Message Class	AJ	Billing program
3	Message Class	E9	General IS-U Error Messages