Hi Ive been couponing for almost a year now but am newer to this site.

I was just wondering how do I know if 2 coupons can be stacked?

What makes a coupons stackable?

Is there a certain number that is in the beginning or end of a UPC?

What if a coupon says Limit one coupon per transcation/purchace?

And if SOF in BC allows stacking?

Thanks