Early discount/late charge simulation.
The amount that will be displayed in the "Early discount/late charge amount" column is calculated while taking into account:
* the early discount/late charge code (either of the open item, or the BP).
* a number of days.
* predefined early discount/late charge rates.
The result will be either a negative amount (=late charge) or a positive amount (=early discount).
For the simulation, the number of days can be entered:
* either directly in the "Nbr of days" field.
* or using a reference date (the number of days will be calculated with respect to the current date).