Header bidding bids are coming in fine but Ad Manager is returning an empty line item.
Step 1: Fix all other errors found in PubGuru Ad Inspector (PGAI) and re-test
Step 2: Append the URL with ?googfc to run the Google console.
Step 3: Check for any tagging errors on ‘Page Request’ tab. Ideally, it should say ‘Page tagged correctly!’ similar to the below screenshot.
Step 4: Run a report on DFP, dimensions: Ad Unit > Orders. This allows you to check that all Orders are active and serving. If anything is missing, check the Order status under ‘Delivery > Orders’. Make sure they are ‘Ready’ or ‘Delivering’.
Step 5: Check the status of the Line items as well as Order as it could appear ‘Delivering’, but the Line Items under it actually ‘Needs Creatives’.
Step 6: Check targeting within the Line Items if correct.
Step 7: Audit your header bidding configuration:
- Correct Network ID configured per ad unit
- Slot field should be your Ad Manager ad unit code
- Correct bidder parameters
- Correct ad sizes