When submitting product identifiers, the following should be applied.
If a manufacturer has assigned a bar code, then submit brand, mpn (if available), GTIN, and set identifier exists to yes.
If the manufacturer has not assigned a bar code, then remove the values brand, mpn, gtin, and set identifier exists to no.
While the official documentation does mention, you can submit brand + mpn and ignore GTIN. In most cases, this will cause issues and generate warnings such as limited performance due to missing identifiers. This applied to warnings before June 2021.
As of June 2021, if the manufacturer has not assigned bar codes and your brand, gtin, and mpn values are removed, you will still get the warning “limited performance”. This is because Google now adds another check depending on which categories your products belong to.
Meaning regardless of adding accurate data, you may still get flagged.
What You Can Not Do!
Only submit GS1 barcodes, any other barcodes that you self generate are not allowed and will get your products disapproved.
The most common misconceptions are that most merchants tend to use SKU as the MPN values, which is incorrect.
SKU stands for “stock keeping unit” and — as the name suggests — it is a number (usually eight alphanumeric digits) that retailers assign to products to keep track of stock levels internally.
An MPN, or manufacturer part number is a manufacturer-assigned, unique, alphanumeric value that is used to identify a product among other products from the same manufacturer.
How To Find The Bar Codes?
By checking the product packaging or by contacting the manufacturer.
A secondary reason for issues is that most merchants tend to use SKU as the MPN values, which is incorrect.
Why Is Google Doing This?
Most likely to reduce scammers on Google Shopping.
What If I Can’t Do Any of The Above?
Great question. In this case, you will have to accept the limited performance. If you are the manufacturer, consider registering your products with GS1 bar codes.
Remove All Values & Set Identifier Exist to No
If you want to easily remove all values.
You can use feed rules in Google Merchant Center to remove the values Brand, MPN and GTIN (assuming GTIN has wrong values) then set Identifier Exists to the value of No.
You can find the official guide here: https://support.google.com/merchants/answer/7450276
Google suggest adding GTIN so I add the UPC, product goes away as if I fixed it. Next day the same products with the same fix suggestions. Does this process take a few days or something? When they suggest the same products it has the barcodes wiped out
Generally, the barcode should be added at source in the data feed, alongside the brand value. Then the issue is resolved in 30 minutes once the data feed is processed. If you edited the data using Google’s new suggestions to fix it, you might not have done it correctly, or Google did not correctly suggest what else to fix. Go to GMC > Products > all products > click on your product > view the final attributes.
How are you GOOGLE ADS SPECIALIST?
About SMART GOOGLE SHOPPING…
A FEED of 18,000 products over 6 months advertising, only a few actually go out of sales…
Let’s say about 100 products on average, THAT REALLY GET SALES, and have clicks!
Daily Spend does not consume the entire budget.
Google MERCHANT CENTER is OK.
All 18,000 products are in the same FEED and ad group, configured for ROAS.
What would be the advanced structure for SMART GOOGLE SHOPPING, to scale the other products that are not leaving sales or clicks?
Is the standard search that appears only text, putting manual CPC, those used in the past, buying SPECIFIC keywords, is it still viable?
*I’m from Brazil, sorry for the writing errors! I am using a translator 🙂
My first recommendation is to improve all your product details: https://support.google.com/merchants/answer/7052112
And also check out here: https://feedarmy.com/kb/category/advertising-platform/google-merchant/attributes/
and here: https://feedarmy.com/kb/category/advertising-platform/google-merchant/tips/
Then if the products still don’t improve in performance try excluding them from the smart shopping campaign and add them in a standard shopping campaign.
Here is a basic guide: https://feedarmy.com/kb/google-adwords-how-to-create-subdivision-product-listings/
Shopping ads are all visual ads in Web Search, Shopping Tab, Google Images, YouTube, Google Assistant etc.