The campaign for your Programmatic Guaranteed deal with a major clothing line was scheduled to go live today, but you notice that no impressions were run and no spend was reported in Display & Video 360. What first step do you take in the Deal Troubleshooter to figure out the issue?

The first step in troubleshooting a Programmatic Guaranteed deal with no impressions or spend is to check for incoming bid requests. If there are no bid requests, the deal cannot serve, indicating a potential issue with the publisher's setup or the deal ID itself. This is a foundational check before investigating other factors. "Make sure your deal complies with publishers" is too vague and doesn't offer a specific troubleshooting step. "Make sure the line item for potential targeting issues is checked" and "Make sure potential reach issues are checked" are important subsequent steps if bid requests are present but impressions are still low. However, without bid requests, targeting and reach are irrelevant, as the deal isn't even being offered the opportunity to serve.