> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://help.omegatheme.com/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# Glossary

Terms used in the app and this documentation. Check here first before searching other articles.
| Term | Meaning |
| ---- |
| **Channel** (Sales channel) | Destination platform: Facebook, Google, TikTok, Microsoft, Pinterest, Klaviyo. |
| **API feed** | Omega pushes products through the platform's native API (only FB and Google support this). Fast sync, no URL refresh needed. |
| **XML feed** | Omega generates a URL, you paste it into the platform. The platform fetches it on a schedule. Used for TikTok/MS/Pinterest/Klaviyo. |
| **Variant** | A Shopify product variant (size/color/...). 1 product can have many variants. |
| **Sync status** | `Syncing` (in progress) / `Synced` (done, OK) / `Failed` (error). |
| **Approval status** | Approval status returned by the destination platform: `Approved` / `Pending` / `Disapproved`. |
| **Disapproved** | The product reached the catalog but the platform rejected it. **You can fix it yourself** — see [7.2](https://markdownlivepreview.com/#72-product-disapproved-on-gmc) |
| **Error** | The product hasn't reached the catalog because Omega failed to push it. Usually due to a broken account connection or a missing required field — see [7.4](https://markdownlivepreview.com/#74-product-error--failed-to-reach-the-platform). |
| **GTIN** | Global Trade Item Number — international barcode standard (UPC/EAN/JAN/ISBN). Google requires it for branded products. |
| **MPN** | Manufacturer Part Number — product code issued by the manufacturer. Used when GTIN is unavailable. |
| **GPC** (Google Product Category) | Classification by Google Product Taxonomy. Required for GMC. |
| **Custom labels** (`custom_label_0...4`) | 5 free-form fields you assign to products to segment Google Ads campaigns (e.g. by margin, by season). |
| **Quota** | Plan-based limit: how many products can sync, how many feeds you can create, sync frequency. |
| **Market** | A market in Shopify Markets (e.g. US, EU). Each market has its own currency/language. |