Missing brand in a Shopify Google Shopping feed

Common causes

• The Shopify vendor field is blank on affected products.
• The vendor field contains a distributor, supplier, or marketplace name instead of the brand.
• Variant rows inherit product data incorrectly.
• The feed app is not mapping vendor to brand.
• Brand is present, but Merchant Center receives a blank value from another data source.

What to inspect

• Check the vendor column in the Shopify CSV export.
• Compare feed output against Merchant Center final attributes.
• Look for mixed capitalization, placeholder brands, or “unknown” values.
• Check whether custom products should use your store brand or a true manufacturer brand.
• Confirm brand, MPN, GTIN, and identifier_exists are not contradicting each other.

Practical fix path

Group affected products by brand pattern first. Bulk edit the source data, then let the feed sync and confirm the final value inside Merchant Center before assuming the issue is fixed.