Symptom Library
- Floodlight tags not firing or conversions missing
- Attribution discrepancies between DV360 and GA4
- Campaign spending issues (underspending or overspending)
- Creative approval delays or rejections
- Audience list sync failures
- Inventory availability constraints
- Frequency capping not working as expected
- Cross-device attribution gaps
Investigation Workflow
Floodlight Issues
- Check Floodlight tag status in Campaign Manager 360
- Use Chrome Developer Tools Network tab to verify tag fires
- Review Floodlight configuration for correct advertiser ID and activity tags
- Verify GTM container deployment if using Tag Manager
- Check attribution windows and conversion counting methodology
- Confirm user consent settings aren't blocking tags
Attribution Discrepancies
- Compare attribution models between DV360 and GA4
- Review lookback windows (DV360 default: 30-day click, 1-day impression)
- Check for timezone mismatches in reporting
- Verify conversion counting methodology (unique vs. many-per-click)
- Examine cross-device attribution settings
- Review data sampling in GA4 vs. unsampled DV360 data
Campaign Performance Issues
- Check line item pacing settings and flight dates
- Review bid strategy and performance goals
- Verify targeting isn't too narrow (audience, geo, inventory)
- Check inventory availability and bid competitiveness
- Review brand safety and contextual targeting exclusions
- Confirm creative assets are approved and serving
Tools & Logs
- Campaign Manager 360 Floodlight Status Report
- Chrome DevTools Network tab for tag debugging
- GTM Preview mode for tag validation
- DV360 Audit Log for campaign change history
- Floodlight Test Conversion tool
- Google Tag Assistant Chrome extension
- Network Debugger for API troubleshooting
Common Error Messages
"Floodlight activity not found"
- Verify Floodlight configuration is linked to correct advertiser
- Check activity tag string matches exactly
- Confirm activity hasn't been archived or deleted
"Insufficient inventory available"
- Broaden targeting parameters
- Increase bid amounts
- Review inventory source settings
- Check deal ID availability
"Creative rejected"
- Review creative specifications and file size limits
- Check for policy violations (malware, prohibited content)
- Verify landing page is accessible and matches advertiser domain
- Ensure SSL certificate is valid
Escalation & Communication
- DV360 Support via Google Marketing Platform Help Center
- Campaign Manager 360 support for Floodlight-specific issues
- Partner account manager for platform-wide problems
- Technical Account Manager (TAM) for enterprise accounts
- Document error codes, screenshots, and timestamps for support tickets
Preventive Maintenance
- Weekly Floodlight health checks using CM360 reports
- Monthly audit of conversion tracking configuration
- Regular review of attribution settings and lookback windows
- Quarterly access audit for partner and advertiser users
- Monitor API usage and rate limits
- Test Floodlight tags in staging before production deployment
- Set up automated alerts for campaign underspending or overspending