Programmatic tag-based integrations are recommended to have a Passback Tag in place to help mediate "no fill" scenarios. A popular passback option is to backfill to a Sharethrough House Campaign.
1. Setup a Campaign within Sharethrough
2. Designate the campaign as a House Campaign
3. Copy the campaign key from your Ad Server Tag
4. Configure your Passback Tag as follows
<div data-str-native-key="YOUR-PLACEMENT-KEY" data-str-campaign-key="YOUR-HOUSE-CAMPAIGN-KEY" style="display: none;"></div>
5. Be sure to replace the value of data-str-native-key with your Placement Key and data-str-campaign-key with your house campaign key from above.
6. Navigate to the Placement you'd like to configure with the Passback Tag
7. Follow the remaining steps outlined here