SAP ABAP Program LK23DF27 (coiob_complete_for_reversal) is using

• Table/Structure Field (31)
• Function Module (3)
• Table (4)

#	Object Type	Object Name	Object Description	Note
1	Table	COBK	CO Object: Document Header
2	Table	COEP	CO Object: Line Items (by Period)
3	Table	COIOB	Conversion of Object Number and Object Data
4	Table	PERIODS	Period structure