Creating an Amazon Affiliate Tracking id aka Amazon Affiliate Tag
This guide will go over how to setup new tracking IDs in your amazon affiliate account. We recommend that you setup a custom tracking id for each store you have running. You will be able to track clicks and sales specific to that store.
Direct Link to manage your tracking ID https://affiliate-program.amazon.com/home/account/tag/manage
You can also login to your affiliate account https://affiliate-program.amazon.com/home then click Account Settings - Manage Tracking IDs
On the page below you will see all tracking IDS you have created and also a option to add a new tracking id
You should pick a keyword that matches your store, if you have a lot of tracking ids, it will be easier to see which stores are performing.