# Ecommerce and product feed terms, defined.

> Short definitions of the product feed, channel and Shopify SEO terms merchants meet, with sources.
> Canonical: https://rabbot.ai/glossary/

One term per page, defined in plain words, with links to the guides that go deeper.

## What is a disapproved product?

https://rabbot.ai/glossary/disapproved-product/ · Markdown: https://rabbot.ai/glossary/disapproved-product.md

A disapproved product is an item Google Merchant Center has stopped showing. Learn the common causes, where to find them and how re-review works.

## What is a GTIN?

https://rabbot.ai/glossary/gtin/ · Markdown: https://rabbot.ai/glossary/gtin.md

A GTIN is the barcode number that identifies a product. Learn the valid lengths, why Google and Meta ask for it, and the mistakes that get products flagged.

## What is a product feed?

https://rabbot.ai/glossary/product-feed/ · Markdown: https://rabbot.ai/glossary/product-feed.md

A product feed is the file or API stream that sends your catalogue to Google, Meta and TikTok. Learn the required fields and how feeds drift from your store.

## What is a supplemental feed?

https://rabbot.ai/glossary/supplemental-feed/ · Markdown: https://rabbot.ai/glossary/supplemental-feed.md

A supplemental feed is an extra product data source that adds to or corrects the data in your main feed. See when a Shopify store uses one and what to watch.

## What is Meta Commerce Manager?

https://rabbot.ai/glossary/meta-commerce-manager/ · Markdown: https://rabbot.ai/glossary/meta-commerce-manager.md

Meta Commerce Manager is where a store manages the product catalog behind Facebook and Instagram shopping. Learn what the catalog needs and what goes wrong.