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Overview
Products in Google Merchant Center require identifiers like GTIN or MPN to stay compliant and ad-eligible. Since MEM products are custom-made and typically lack GTINs, you can use your product's SKU as the MPN. MEM auto-generates unique SKUs, which simplifies compliance.
Rather than manually setting MPNs, streamline the process by configuring a feed rule in your Merchant Center that maps SKUs directly to MPNs.
Assigning MPN Numbers
MEM generates a unique SKU for each product.
Using the SKU as the MPN ensures proper identification in Google Merchant Center.
This helps avoid errors such as missing or duplicate MPNs.
When MPN Is Required
An MPN is required if you don't provide a GTIN.
For custom-made MEM products, MPN is optional— simply mapping your SKUs suffices.
Important: Do not falsify MPNs; always use authentic or system-generated SKUs.
Setting Up Feed Rules
Follow these steps—updated for the new Merchant Center interface:
Sign in to your Google Merchant Center.
Navigate to Products → Feeds and select your feed.
In the menu, choose Feed rules (found under Settings).
Click + Create rule, select MPN, and map it to
item_id(your SKU).Save and run a test fetch to ensure successful syncing.
For a detailed step-by-step guide on configuring rules, refer to Google’s support page: Set up your attribute rules.
Troubleshooting
Missing MPN Error
Ensure the SKU exists in your feed.
Verify your rule correctly maps the SKU to the MPN field.
Duplicate MPN Error
Check that every SKU is unique in MEM.
Edit or re-sync products if duplicates are found.
Feed Not Updating
Re-fetch the feed in Merchant Center.
Confirm your data sync is functioning correctly.
Need Help?
Contact Google help directly using their support portal:
Google Merchant Center Support
Additional Resources
Creating & Importing Products — Learn how MEM generates unique SKUs.
Managing Imported Products — Edit SKUs in Shopify before syncing.
Google Merchant Help Center — Full guidance on product data requirements.
Summary: Use your product SKUs as MPNs to comply effortlessly with Google Merchant Center requirements. Leverage feed rules to automate this process—no manual entry needed. Stay aligned with Google’s evolving interface and policies by setting up the correct mapping and ensuring your feed is free of errors.