It will add both 7% and 10% and discount will be treated as 17%.
Condition 1 - dated from 01.01.2013 to 31.03.2013 … it will be 7%
Condition 2 - dated from 01.02.2013 to 28.02.2013 …,. it will be 10%. So, it mean both conditions are passed and it will take the 17% as discount… in the 2nd condition you’re dates are inside the dates mentioned in the 1st condition. So, it will consider both the conditions as “true” and accepts to give you 17% discount. what is the discount selection you have opted at AR parameters?
First - if you mention Disc1 (7%) and Disc 2 (10%) then the discount will not be 17%, it will be only 16.3% (You can see this figure in the Disc. pct field in Order line).
You did the setup of line discount at customer or Sales order level? did you assigned line discount group to customer? there is a small difference between Discount and Disc.pct fields… Discount field will calculate on “EACH item quantity” . (Example: If Quantity is 5 , Discount % is 2 and Price is 10 then 50-10(5 * 2) = 40 net amt)… Disc.Pct field will calculate discount %.
coming to your case, you might be missing some setups. It will be 17% only as both conditions are true it will give you 17% as discount. Re-check once again your setups.
You have created a cross over of dates - in this case the system does not take both it takes the first. You need to split your 7% to end on 31.01.13 and then a new line to start the 7% again on 01.03.13. Overlapping dates in trade agreements AX has never liked.