How can I update UPC in Google Merchant Center automatically?

Hi,

I’m having an issue with upc upload to my items to google merchant center.

I uploaded my items without upc, and google approved those items.

I entered the upc in shopify but google didn’t update it,

It’s showing in my settings that only product availability and price update automatically.

How do I change that to update

That is an issue if you are using the free google shopping channel. It has been bugged for over a year.

If you want to continue to use that app, then the only solution is to add a supplement feed in Google Merchant Center, with the ID’s and gtin’s

https://support.google.com/merchants/answer/7439058?hl=en

Or instead use an app that works, such as: https://apps.shopify.com/multiple-google-shopping-feeds