SAP ABAP Program REASPCAN (Adjustment Reversal of Billing Documents) is using

• Table/Structure Field (21)
• Function Module (3)
• Message Class (2)
• Message Number (5)
• Program (9)
• Search Help (1)
• Table (6)

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