I am trying to figure out how SAP calculates for the Difference Amount (ISEG-DMBTR) in the MI20 transaction.
When I check the ISEG table, the value is 0.00 unless the difference is posted. When the difference is posted that is when the value shown in transaction MI20 is written to the ISEG-DMBTR table.
Where does the system get the value (Difference Amount) shown in transaction MI20 before posting the difference? or how is it then calculated?