What Is Deduplication?
Deduplication, in the context of your AvantLink program, is the process of ensuring that a single sale is not improperly attributed to more than one affiliate. In other words, it's a means of avoiding paying commission twice on the same sale for affiliates that are in different networks. If you are only using AvantLink for your affiliate program, you don't need to worry about implementing this.
Deduplication via AvantMetrics
AvantLink's deduplication solution automatically deduplicates orders from different affiliate networks ensuring that merchants only pay commission to one affiliate per order. It will refer to the timestamps of each click and only reward the last click (last click wins model). Merchants are required to use AvantLink's AvantMetrics service to use deduplication.