Field help (SALDISCRGV) 

Discounts and charges columns are displayed. They depend on the setup of the Price list structure code (see the Price list structure documentation). They can be initialized by the use of the price lists (see the Price list parameters and Price list entry documentations). Access to these columns can depend on the parameters of the reasons associated with the price lists as well as the value of the reason given to the UPDPRISAL parameter for Sales and to the UPDPRIPUR parameter for Purchase.

These discounts or charges are defined in amount or in percentage and they are applied in total or as a cascade to the gross price to determine le net price of the document line.

From this information using the contextual button there is the possibility to view the reasons associated with the price as well as the different discounts and charges field.