SAP ABAP Program MEA21CAN (Forms for Billing Cancellation) is using

• Data Element (1)
• Table/Structure Field (12)
• Message Class (2)
• Message Number (13)
• Table (3)

#	Object Type	Object Name	Object Description	Note
1	Table	EMSG_MSG	Int. Structure for Macros
2	Table	ERCH	Billing Doc. Data
3	Table	ISU_BSW_CANC	All Billing Documents from Inst. Group to Main Document