GLOSSARY
Supplemental feed
In brief: Secondary feed used to add or override attributes without changing the main feed (e.g., custom labels, categories).
Related terms
Structured dataset (XML/CSV/TSV/Sheets/API) containing product data: titles, prices, images, availability and required attributes.
Optional feed attribute (custom_label_0..4) used to segment products in campaigns (margin, seasonality, bestseller, clearance).
Google's taxonomy category used for classification and category-specific requirements.
Rules inside Merchant Center to transform attributes (concat/replace/map) without changing the source feed.
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