Field help (CUR2) 

This field indicates the code of the currency in which the order or receipt prices and amounts are expressed.

This mandatory information is initialized to the currency of the supplier to which the order is addressed. Provided the order is not yet created, it is possible to modify this currency. If order lines have been entered, or during the copy of an order, a question will be posed to the user about whether to re-calculate the prices and discounts depending on the price lists. If the user decides not to apply the price lists, the prices and discounts will be simply converted into the new currency at the rate determined by the exchange rate type and the order date.
The change of currency is forbidden if at least one line with a cost structure has already been entered.

From this field, it is possible to directly enter a currency code whose existence is controlled in the currency table or to use the contextual button to:

Specificities linked to the inter-company: Within the framework of an inter-company or inter-site order, the currency entered in the sales order generated is initialized to the currency of the customer associated with the purchase site.