To upload your product data in Google Merchant Center, you'll first need to create a data source to which you can submit your data.

This step is required for any new data source, and when a data source is registered, you can update the existing source without having to register it again.

What is primary data source

A primary data source is the main source of information that Merchant Center uses to access and display your product data.

Use primary data sources to add or remove product data, set language and country targeting, and set rules for your product data. Primary data sources are the only data source type that can add or remove products.

Note: If you submit separate primary feeds for online and local ads and/or listings, make sure that you don't submit the same products in both feeds.

Note: If you submit separate primary feeds for online and local ads and/or listings, make sure that you don't submit the same products in both feeds.

Create a primary data source

1. In your Merchant Center account, click on the Settings & tools icon in the top right.

2. Click Data sources.

3. On the "Primary sources" tab, click Add product source.

4. Select "Add product data from a file" as the type of product source

5. Enter a feed link of your file from Feedyio App

6. Follow the prompts and enter these pieces of information:

   1. Target Countries: Specify where the products will be sold. Ensure the product data complies with the rules of these countries.

   2. Language: Set the language of your product data. Follow the guidelines for supported languages and currencies.

   3. Feed Label: Group products by a label for easier advertising in Google Ads campaigns. If you don't see the Feed label, check this article.

   4. Destination: Select where your products will appear, such as Google Ads or other features.

7. Click on Continue

After you have provided the information and clicked Continue, you can view and manage your newly created primary data source in the "Data sources" section of your Merchant Center account.

To manually fetch or upload a data source, click on the 3-dot icon in the "Processing" tab of your data source and select your upload preference from the dropdown.

What is supplemental data source

A supplemental data source is a secondary data source used to provide more details or update existing details, such as required or optional product attributes, that may be missing from your primary data source. A supplemental data source can't be used to add or remove products or be used as a standalone data source.

Create a supplemental data source

1. In your Merchant Center account, click on the Settings & tools icon in the top right.

2. Click Data sources.

3. On the “Supplemental sources” tab, click Add supplemental product data.

4. Select "Add product data from a file" as the type of product source

5. Enter a feed link of your file from Feedyio App

6. Click on Continue

To manually fetch or upload a data source, click on the 3-dot icon in the "Processing" tab of your data source and select your upload preference from the dropdown.
​