DV360 Data Layer Setup (Custom Variables) | OpsBlu Docs

DV360 Data Layer Setup (Custom Variables)

Configure data layers and custom Floodlight variables for enhanced DV360 tracking and optimization.

Data Layer Overview

Floodlight custom variables (u1-u100) enable rich data capture for segmentation, reporting, and campaign optimization in DV360. A properly structured data layer ensures consistent, accurate data collection across your site.

Data Layer Architecture

Standard E-commerce Data Layer

// Push to dataLayer before Floodlight tag fires
window.dataLayer = window.dataLayer || [];
window.dataLayer.push({
  'event': 'purchase',
  'transactionId': 'ORD-2024-12345',
  'transactionTotal': 299.99,
  'transactionProducts': [{
    'sku': 'PROD-123',
    'name': 'Wireless Headphones',
    'category': 'Electronics',
    'price': 149.99,
    'quantity': 2
  }],
  'customerType': 'returning',
  'shippingMethod': 'express'
});

Lead Generation Data Layer

window.dataLayer = window.dataLayer || [];
window.dataLayer.push({
  'event': 'lead_submission',
  'formType': 'contact_sales',
  'leadTier': 'enterprise',
  'industry': 'financial_services',
  'companySize': '1000+',
  'region': 'north_america'
});

Custom Variable Configuration

In Campaign Manager 360

  1. Navigate to Advertiser → Floodlight → Custom Variables

  2. Click New Custom Variable

  3. Configure settings:

    • Name: Descriptive name (e.g., "Product Category")
    • Report Name: Name shown in reports
    • Type: String (text) or Number
    • U-variable: Select u1-u100
    • Friendly Name: User-facing name

  4. Save and assign to relevant Floodlight activities

Custom Variable Types

String Variables (Text):

  • Product categories
  • User segments
  • Geographic regions
  • Campaign codes
  • Device types

Number Variables (Numeric):

  • Quantity
  • Lifetime value scores
  • Custom revenue amounts
  • Engagement scores

Implementation Patterns

GTM Data Layer Variables

  1. Create Data Layer Variables in GTM for each custom parameter
  2. Reference in Floodlight tag configuration
  3. Map to u-variables

Example GTM Setup:

// Data Layer Variable: transactionId
// Variable Type: Data Layer Variable
// Data Layer Variable Name: transactionId

// Data Layer Variable: productCategory
// Variable Type: Data Layer Variable
// Data Layer Variable Name: transactionProducts.0.category

Mapping to Floodlight U-Variables

<!-- Floodlight tag in GTM -->
<script>
  gtag('event', 'conversion', {
    'allow_custom_scripts': true,
    'value': {{transactionTotal}},
    'transaction_id': {{transactionId}},
    'u1': {{productCategory}},
    'u2': {{customerType}},
    'u3': {{shippingMethod}},
    'u4': {{region}},
    'u5': {{deviceType}},
    'send_to': 'DC-XXXXXXXX/invmedia/purchase0+transactions'
  });
</script>

Common Data Layer Patterns

E-commerce Purchase

// On purchase confirmation page
window.dataLayer = window.dataLayer || [];
window.dataLayer.push({
  'event': 'floodlight_purchase',
  'ecommerce': {
    'purchase': {
      'actionField': {
        'id': 'ORD-2024-67890',
        'revenue': '459.99',
        'tax': '35.00',
        'shipping': '15.00',
        'coupon': 'SUMMER20'
      },
      'products': [{
        'name': 'Running Shoes',
        'id': 'SHOE-456',
        'price': '129.99',
        'brand': 'BrandName',
        'category': 'Footwear/Running',
        'variant': 'Blue',
        'quantity': 1
      }]
    }
  },
  'customerType': 'new',
  'loyaltyTier': 'silver'
});

Lead Form Submission

// On form submit success
window.dataLayer = window.dataLayer || [];
window.dataLayer.push({
  'event': 'floodlight_lead',
  'formId': 'contact-sales-form',
  'formType': 'demo_request',
  'leadSource': 'website',
  'leadScore': 85,
  'industry': 'technology',
  'companySize': '500-1000',
  'interestedProduct': 'enterprise_platform',
  'timeline': '1-3_months'
});

Content Engagement

// On whitepaper download
window.dataLayer = window.dataLayer || [];
window.dataLayer.push({
  'event': 'floodlight_content',
  'contentType': 'whitepaper',
  'contentTitle': 'Digital Marketing Trends 2024',
  'contentCategory': 'thought_leadership',
  'userSegment': 'marketer',
  'downloadFormat': 'pdf'
});

Video Interaction

// On video completion
window.dataLayer = window.dataLayer || [];
window.dataLayer.push({
  'event': 'floodlight_video',
  'videoTitle': 'Product Demo',
  'videoId': 'VID-789',
  'videoDuration': 180,
  'percentWatched': 100,
  'playerType': 'youtube_embedded'
});

Advanced Implementations

Dynamic Remarketing

For dynamic remarketing campaigns, pass product data:

window.dataLayer.push({
  'event': 'floodlight_product_view',
  'ecommerce': {
    'detail': {
      'products': [{
        'id': 'PROD-123',
        'name': 'Wireless Mouse',
        'price': '29.99',
        'category': 'Electronics/Accessories'
      }]
    }
  }
});

// Corresponding Floodlight tag
gtag('event', 'conversion', {
  'allow_custom_scripts': true,
  'u1': 'PROD-123',          // Product ID
  'u2': 'Electronics',        // Category
  'u3': '29.99',             // Price
  'send_to': 'DC-XXXXXXXX/invmedia/prodview0+standard'
});

User Authentication State

// Track logged-in user status
window.dataLayer.push({
  'event': 'user_status',
  'userAuthenticated': true,
  'userId': 'USER-456789',       // Hashed user ID
  'membershipTier': 'premium',
  'accountAge': 'over_1_year'
});

Cart Abandonment Tracking

// Track cart state
window.dataLayer.push({
  'event': 'floodlight_cart',
  'cartValue': 199.99,
  'cartItemCount': 3,
  'cartProducts': 'SKU123,SKU456,SKU789'
});

Data Quality & Validation

Pre-Launch Checklist

  • All custom variables defined in Campaign Manager
  • Data layer pushes before Floodlight tags fire
  • Variable names consistent across site
  • No undefined or null values passed
  • GTM variables configured correctly
  • Test conversions verify data capture

Ongoing Monitoring

  • Weekly spot checks in Campaign Manager reports
  • Monthly audit of custom variable usage
  • Quarterly review of data layer implementation
  • Monitor for data type mismatches (string vs. number)
  • Track missing or malformed values

Common Issues

Problem: Custom variables showing as "(not set)"

  • Solution: Verify data layer push happens before tag fires

Problem: Numeric values appearing as strings

  • Solution: Configure variable as Number type in Campaign Manager

Problem: Inconsistent category values

  • Solution: Implement data layer standardization and validation

Best Practices

  • Define clear naming conventions for custom variables
  • Document all u-variable mappings in a central location
  • Use consistent category hierarchies (Category/Subcategory)
  • Validate data types match Campaign Manager configuration
  • Implement data layer on all relevant pages, not just conversion pages
  • Test with GTM Preview mode and Campaign Manager test conversions
  • Keep sensitive data (PII) out of custom variables
  • Use hashed IDs for user identifiers if needed
  • Version control data layer changes
  • Create fallback values for optional parameters
  • Monitor data quality in regular reporting reviews

Privacy Considerations

  • Never pass personally identifiable information (PII) in custom variables
  • Hash or pseudonymize user identifiers
  • Implement consent management for EU users
  • Document data retention policies
  • Review custom variables for compliance with privacy regulations
  • Use server-side processing for sensitive data
  • Implement consent mode to respect user preferences
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