When you create a conversion tagA small piece of code that tracks how users respond to the ads that serve for the orders they are associated with., you must manually associate it with the orders that you want it to track through the Orders tab in the view conversion tag screen. You can associate an order with conversion tags through the Conversion Tags tab in the view order screen.
To associate a conversion tag with an order:
Open the view conversion tag screen for the conversion tag with which you want to associate an order.
Click the Orders tab.
In the Associated Orders field, select an order in the list. Only orders that belong to the same advertiser as the conversion tag appear in the list. You can select multiple orders to associate with a conversion tag.