To build dynamic ads in Bannerwise, the first step is to upload a feed.
When a dynamic display feed is added, Bannerwise loads in the first 10 elements of the feed and stores them in the database letting you create ads. The main purpose of uploading feeds in Bannerwise is to use them to design and build your creatives. The 10 items stored in the database are never updated or synced with the source data feed.
When you add a dynamic element to your design, you have to select an index and a reference. The reference links to an attribute in the line item and the index represents the relevance or importance of that element. The index you pick in Bannerwise directly influences which line item from the feed is displayed when the campaign is running: "Index 1" is the most relevant line item depending on the settings of your dynamic campaign and that's why, in Bannerwise, it always starts from selecting "index 1".
Bear in mind that multiple attributes of a line item are linked to each other. If you use, for example, the references "title" and "image_link" the index for both elements has to be the same. That way everything will be linked as it should and your ads will show the correct product information.
We hope the information above solved your question. If there is anything else we can help you with, and you couldn't find it in our help center, don't hesitate to contact us by chat. We are always ready to help you.