Line Item Level Coupons

Hello Everyone,

Are line item level coupons available where you tie a promotion to a particular item? I know you can set it up where if you buy A01 you get A02 free, but is there a way to set that up as a 1-to-1 ratio? Let me explain a little further... Our client has end users placing orders through distributors, so the distributor is actually placing the order. The end users apply and receive a promotion code when they sign up and place their first order (which must be done through a distributor). The distributor may combine these orders from end users into one large order, therefore for each A01 that is on order, they give away a bag of items free (let's say A02), to that customer but they want to capture a note with that promotion that it is for a particular end user. So, the question is, is it possible to track that only one promotion is given per one item (for each A01 on the order only allow the same number of free A02). Also, is it possible for each promotion to add a note that will designate which end user it goes to? Any thoughts would be greatly appreciated.

Thank you in advance for your time!

Kristen