I am setting up a number of items like bits, caulking etc in groups.  I want to put in mix-n-match quantity discounts. The problem is the only rule in global discounting is "total items in cart".  So if a person buys 29 of an item that has a quantity break at 30 but then adds one more item that is unrelated the discount goes into effect.  If there was a rule like "total matched items in cart" then the system would work great. 

This is where you can find an example of what I am referring to. 

http://www.dhcsupplies.com/aaadhesives/adhcaulknp1.htm

Any ideas would be appreciated....MJP

I've had a good look at this - I notice in the discount methods, if you choose the 'total item' rule it has the options "greater than", "equal to", "less than"  and "contains".

I thought a 'strict' discount method with the following 3 rules could work:

1/ Create a rule 'total item' > 29

3/ Create a rule "total item" contains  [ITEM NUMBER 2]

My interpretation of the above discount method is that the combined qty of item code 1 & 2 must be >29 in order to apply the discount.

However, when testing, this did not occur (I tried the item number and product ID). Maybe a bug?

Perhaps someone from AC can shed some light on the 'contains' option for 'total item'. (not to be confused with 'contains' option for 'items in the cart')