🧩 Custom Mapping Field & Rules
Optimize your product feed for better ad performance, not just approval.
By default, Omega already maps the required fields to help your products get approved on ad channels.
Custom Mapping is where you go further - to tailor your product data based on your ad strategy, targeting, and campaign structure.
🎯 When should you use this?
Use Custom Mapping when you want to:
- Improve ad relevance & CTR
- Structure data for better campaign segmentation
- Customize content for different audiences or channels
- Add strategic attributes like custom labels
⚙️ Custom Mapping Field
Control how each attribute is defined in your feed.
✨ What you can do
- Add additional attributes for optimization
(e.g. custom_label, enriched title, campaign-specific fields)
- Customize how values are built
Combine or adjust Shopify data to create more compelling feed content
🧠 Example use case
Use Case | Description | Example Mapping |
Map the GTIN field from Shopify | Map various Shopify fields to GTIN (required by Google for effective ad visibility). | Channel: gtin Shopify: {{variant.barcode}}{{product.title}} |
Map your custom Product Category | Assign your own product category (e.g. using tags, product type) to Google's product_type field. | Channel: Product Type Shopify: {{product.product_type}} |
Assign Custom Labels for campaign grouping | Group products based on tags, vendors, collections, etc., for better ad segmentation. | Channel: Custom Label 0 Shopify: {{product.tags}} |
Use SEO title instead of default product title | Prefer the SEO title (if available) for better search appearance over the default Shopify title. | Channel: Title Shopify: {{product.seo_title}} |
Use SEO description instead of default | Improve CTR and provide optimized descriptions for Google Shopping or Facebook Ads. | Channel: Description Shopify: {{product.seo_description}} |
Add custom labels for discounted products | Create labels to group promotional products using fields like Compare at Price. | Channel: Custom Label 1 Shopify: {{variant.compare_at_price}} |
🛠 How it works
- Step 1: Open your feed and go to Mapping Fields tab
- Step 2: Review existing field mappings
- * You will see a list of attributes (Title, Description, Image link, Availability, Brand, Price value, etc.) already mapped to their default Shopify values. You can click any Shopify value field to edit it directly.
- Step 3: Add a new field mapping and define the Shopify value
🔀 Custom Mapping Rules
Apply conditional logic to optimize data at scale. Unlike Custom Mapping Fields (which apply to all products), Mapping Rules only apply to products that match the conditions you define.
✨ What you can do
- Adjust data based on product conditions
(e.g. price range, product type, vendor…)
- Segment products for ads campaigns
Automatically group products into different strategies
- Personalize feed content dynamically
Without editing products in Shopify
🧠 Example use cases
Condition (WHEN) | Action (THEN) | Result |
Price > $50 | Custom Label 0 = "High Margin" | Premium products get a dedicated label for separate bidding strategy |
Tags contain "sale" | Custom Label 1 = "On Sale" | All sale products grouped for promotional campaigns |
Product type = "Seasonal" | Custom Label 2 = "Seasonal" | Seasonal items isolated for time-limited campaign budgets |
Vendor = "Nike" | Brand = "Nike" | Override brand field for specific vendor products |
Compare at Price is set | Custom Label 3 = "Discounted" | Products with a discounted price tagged for retargeting ads |
🛠 How it works
- Step 1: Open your feed and go to Mapping Rules tab
- Step 2: Click Add rule to create a new rule
- You will see a list of attributes (Title, Description, Image link, Availability, Brand, Price value, etc.) already mapped to their default Shopify values. You can click any Shopify value field to edit it directly.
- Step 3: Set the WHEN condition
In the WHEN section, define which products this rule applies to. Click Select field to choose the product attribute to check (e.g. price, tags, product type, vendor). Then choose an operator (Contains, Equals, Greater than, etc.) and enter the value to match
Example: [Tags] [Contains] [sale]
[Price] [Greater than] [50]
[Product type] [Equals] [Shoes]
- Step 4: Set the THEN action
In the THEN section, choose what should happen for matching products. You have two options:
Use value from another Shopify field | Pull the value dynamically from another Shopify field (e.g. use {{product.tags}} as the Custom Label value). Good for automatic, data-driven labelling. |
Use a custom value | Enter a fixed text value (e.g. "High Margin", "Sale", "Seasonal"). Best for clean, consistent labels used in campaign targeting. |
- Step 5: Activate the rule and click Done
Make sure the Active toggle in the top-right of the rule editor is turned on
Updated on: 08/04/2026
Thank you!