Disable coupons and group discounts when quantity discount applied?

[jsarwar]

The answer is no.

BTW, asking me a question, getting an answer, and then asking a completely different question and waiting less than 24 hours actually doesn't constitute "asking him a few times and not getting an answer."

I have included same question in PM, email and other forum post as I am still looking to restrict customers to use / get only 1 discount of your module not all. I have replied to your PM explaining question again.

[swguy]

So your question is really "can the discounts know about each other so they can know not to apply to the same item?" The answer is no; they don't know about each other. Most have specific item exclusion user exits that you can add products to by hand, but each discount is individual and is not aware of the operation of other discounts.