您的同事需要更新一个大型广告系列的详细信息，并且希望使用结构化数据文件 (SDF) 来执行更改。在将所有内容上传至 Display & Video 360 之前，他们让您帮忙仔细检查相应文件。 您发现一个错误。导致该错误的设置可能是什么？

The correct answer is "There is an SDF that contains both line item and insertion order rows." Display & Video 360 (DV360) Structured Data Files (SDFs) are designed to manage specific entity types. You cannot combine insertion order and line item modifications within a single SDF. Each SDF must correspond to a single entity type (e.g., one for insertion orders, one for line items). "There is an SDF for modifying inventory sources" is incorrect because SDFs can be used to manage inventory sources. "There is an SDF that contains rows for both modifying and removing line items" is incorrect because an SDF can contain both modification and deletion instructions for the same entity type. "There is an SDF that contains 100 line items in a single file" is incorrect because SDFs are designed to handle large volumes of data, and 100 line items is well within their capacity.