The Product Purchases condition sets your campaign to display when purchases on a product page have exceeded a certain amount.
To set your conditions, click Add Condition in the Finalise your campaign section of setting up your campaign. From here, click the green plus button next to the condition you would like to use.
You can choose how many purchases your product needs to have exceeded within your set timeframe in order for the campaign to display.
This condition is used with the Product Purchases campaign in Digital Assistant.