Field help (CUR4) 

This is corresponds to the currency of the order, delivery or invoice.
It is initialized by default with the bill-to customer currency and can be modified. In this case, it can only be modified in creation and duplication modes and is controlled in the currency table.

It is possible to choose the currency for the delivery transaction as well as to define (depending on the value of the 'Excl. tax and Incl. tax Prices' parameter - TC Chapter / INV/NOTATI group) if the prices are expressed excluding tax or including tax. When the delivery comes from an order, this information is automatically loaded and cannot be modified. When it is a direct delivery, this information is no longer modifiable once at least one delivery line is entered. It is inherited in this case from the invoiced customer information.