How can you achieve this?

You want to configure that only complete sales documents can be saved .

How can you achieve this?
A . In the configuration of all schedule line categories used, you set the flag Dialog Message for Incompletion.
B . You assign an incompleteness procedure to all schedule line categories used in sales.
C . In the configuration of all sales document types used, you set the flag Dialog Message for Incompletion.
D . You assign an incompleteness procedure to all item categories used in sales.

Answer: B