Customer wants a Spend metric for DV360 and the ability to filter DV360 widgets (spend, apps/URL, device, city) by line item. Use case: per-line-item programmatic reporting; today they export data to Google Sheets with pivot tables, and manage spend through many custom metrics edited monthly as new line items are added. Workaround: Google Sheets pivots and custom metrics. Related: 'DV360 - pull the line items under a campaign group'.