As of Release 4.0A the sales area (sales organization, distribution channel, division) can be derived from the sold-to or ship-to parties.
This means that it is not longer absolutely necessary to specify the sales area when you create a sales document.
If you do not enter a sales area in the initial screen, the system will determine it using the sold-to or ship-to parties which were entered in the overview screen. If there is more than one sales area for a sold-to or ship-to party, a pop-up window will appear where you can choose the right one. This will then be copied into the entry screen.