Google Fields using Metafields
Update Google Shopping attributes for Shopify products by mapping feed data directly into variant-level metafields under the Google Shopping namespace.
How to Set Up Google Fields via Metafields
Go to App → Feed Settings → Step 2: Matching Column
- Add Metafield Mapping: Click Add Field and select Metafield in the field dropdown.
- Configure Namespace and Key: Enter the designated namespace and key (e.g.,
mm-google-shopping.google_product_category) in the field settings. - Set Metafield Owner: Set the Metafield Owner to Variant.
- Map Column: Select the column from your feed file that contains the corresponding Google Shopping attribute value.
Google Shopping Metafield Mapping Reference
The table below lists the required namespace, key, and owner settings for each Google Shopping field:
Google Fields | Metafield Namespace and Key | Metafield Owner |
|---|---|---|
| Variant | |
| Variant | |
| Variant | |
| Variant | |
| Variant | |
| Variant | |
| Variant | |
| Variant | |
| Variant | |
| Variant |
Google Product Category Taxonomy Requirements
If you provide a Google Product Category in your feed, Shopify uses Google's taxonomy to map the category to your products accurately.
Key Rules & Technical Details
- Metafield Owner Level: All Google Shopping metafields listed above must be assigned to the Variant level, not Product level.
- Exact Syntax Matching: The namespace and key must be entered exactly as
mm-google-shopping.[key]with no extra spaces or uppercase letters. - Taxonomy Validation: Invalid taxonomy names or IDs will fail Google Merchant Center sync validation.
Troubleshooting Steps
- Issue: Google Shopping fields do not appear in Shopify → Solution: Verify that the Metafield Owner is set to Variant and that the namespace and key match the table above exactly.
- Issue: Google Product Category is rejected by Google Merchant Center → Solution: Check your feed values against the official Google Taxonomy list to ensure values use exact English paths or valid numeric category IDs.
Good Articles to Continue
- How to Map Metafields in Stock Sync → Learn the basics of setting up custom product and variant metafields in Step 2.
- How to Update Metafield Date Content Type in Shopify → Learn how to format and update date-type metafields dynamically.
Updated on: 27/10/2026
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