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← Advanced training · Module 14 — Shopping and Merchant Center in depth — feed, catalogue and campaign masterclass

Merchant Center in depth II: the feed specification, attribute by attribute

⏱️ 16 min read · 🛒 Shopping 📦 Data feed · updated on 2026-08-22

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The feed as an editorial product — the required attributes and their exact meaning (id, title, description, link, image_link, price, availability, condition, brand, gtin, mpn), the ones that change performance (product_type, google_product_category, sale_price, shipping, additional_image_link, color/size/material/pattern, item_group_id, custom_label_0-4, product_highlight, product_detail), unique identifiers and their exception, the title rules that move impressions, variants done properly, data sources (file, Sheets, API, platform, automatic crawl), supplemental feeds and transformation rules, and the feed errors with their fixes.

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