Your colleague needs to update details of a large campaign and wants to use structured data files (SDFs) to make changes. Before uploading everything to Display and Video 360, they ask you to double-check the files.You find an error. What setting could be causing it?

In Google Display & Video 360, Structured Data Files (SDFs) are used to bulk edit or upload campaign components, but each SDF file must contain rows for only one entity type at a time, such as insertion orders, line items, creatives, or ad groups. Mixing different entity types within the same file can cause validation or upload errors. Therefore, if a file contains both line item rows and insertion order rows in a single SDF, Display & Video 360 will flag it as an error because these entities must be uploaded in separate SDF files. This is why the correct answer is “There’s a single SDF with both line item and insertion order rows.”