Easy Tech TutsHow to Create a Supplemental Feed Using Google Sheets & Google Merchant Center 2026 Easily
By Impran M N
Fixing disapproved products or updating specific attributes in your Google Shopping inventory doesn't have to mean editing your core website feed. A supplemental data source, built as a synced Google Sheet, lets you match items by product ID and override specific fields. This guide covers setting it up in Merchant Center Next.
01Enable advanced data source management
In Merchant Center Next, turn on advanced data source management to access supplemental feed options.
02Structure your Google Sheet
Set up matching product IDs alongside the custom attributes you want to add or override.
03Add labels and title overrides
Include custom labels or corrected titles in your spreadsheet for the specific products you need to update.
04Connect the spreadsheet as a data source
Authenticate Google Drive access and link your spreadsheet inside the Merchant Center dashboard.
05Map attributes to your primary feed
Link the new supplemental data layer directly to your primary product feed so it knows which fields to override.
06Set a fetch schedule and verify
Configure a scheduled fetch frequency, then check the Diagnostics tab to confirm your product updates processed correctly.
Frequently asked questions
Do I need to edit my website's core product feed?
No, the entire point of a supplemental feed is to override or add specific attributes without touching your core website feed.
How does Google Sheets know which product to update?
You match items using the unique primary product ID in your spreadsheet, which links each row to the corresponding product in your main feed.
Can this help fix disapproved products?
Yes, a supplemental feed is commonly used to correct attributes that are causing disapprovals, such as titles or missing details.
Will the feed update automatically?
Yes, you can set a scheduled fetch frequency so Merchant Center pulls updated data from your spreadsheet on a regular basis.
Watch the full walkthrough
The same steps, demonstrated on screen from start to finish.
