# eBay Products: Identifiers

## Overview

For certain product categories, eBay requires sellers to include product identifiers like brand names, MPNs, and different GTINs to improve items, search visibility, and the customer experience of finding and buying products. Read more about product identifier requirements [here](http://pages.ebay.com/sellerinformation/news/springupdate2015/product-identifiers.html).

## Send Product Identifiers

You can set the product identifiers from the product home page or its **eBay Properties** page.

- **The UPC** – is set on the product home page and sent to eBay when [listing the product](https://descartessystems.aha.io/pages/7630855896457020178). eBay will place the UPC into the item specifics on the eBay listing. If the item does not have a UPC, a value of **Does Not Apply** will be sent.

- **The Brand and Manufacturer SKU (MPN)** – should be set as item specifics on the product’s **eBay Properties** page when listing the item. Even if those values have been set on the product home page, they will not be mapped to the item specifics.

## Hide the MPN from eBay

Some categories do not require the MPN to be sent to eBay (e.g., jewels). Even when using another product identifier, if you entered an MPN it will be automatically sent to the channel. There are two ways to disable sending the MPN.

### Individually

1. Go to **Catalog** > **Manage Catalog** > Select a product.
2. On the **Product Detail** page, go to **Toolbox** > **eBay Properties** > **Edit**.
3. In the **General** panel, uncheck **Send to eBay** > **Save**.

### In Bulk

1. To use the **Bulk Product Update** feature, follow the instructions in [this article](https://descartessystems.aha.io/pages/7630834039903362072).
2. In the product file, set the **MPNSendToEbay** column to **False** to disable sending the MPN > save the file.
3. Return to Sellercloud > in the **Bulk Product Update** panel, click **Upload**.

## ePID eBay Product Identifier

On the eBay website, eBay’s global reference ID for a catalog product is known as the **ePID**. Similar to the [ASIN](https://descartessystems.aha.io/pages/7630837745524602578) used by Amazon, this is one of the ways eBay identifies products. Once set, the ePID can be used in place of other identifiers.

### Individually

1. Go to **Catalog** > **Manage Catalog** > select a product.
2. On the **Product Detail** page, go to **Toolbox** > **eBay Properties** > **Edit**.
3. In the **General** panel, set the **Catalog Type** to **ProductReferenceID**.

4. You can use the magnifying glass icon to search for an ePID. If you already know the ePID, enter it in the **Product Reference ID** field > use the arrow icon to **Check** it.

### In Bulk

1. To use the **Bulk Product Update** feature, follow the instructions in [this article](https://descartessystems.aha.io/pages/7630834039903362072).
2. In the product file, set the column header **eBayCatalogEntryType** to **ProductReferenceID**.
3. Enter each product’s ePID in the **eBayCatalogEntryValue** column > Save the file.
4. Return to Sellercloud > In the **Bulk Product Update** panel, click **Upload**.