Where and/or how does one add the identifier_exists field to Google Shopping channel inside Shopify?

[astroblade]

We don't have barcodes, and our submissions are being rejected. I see the solution is to input false for identifier_exists field, but it isn't an option nor do I see it as an option to add as a field.

[MS-WEB-DESIGNER]

Dear astroblade,

You can use it at google sheet by adding "identifier_exists" as a new column and give value as FALSE

[EmmanuelFlossie]

You can use feed rules in Google Merchant Center. Choose identifier exists as the target and set it to no

Then also clear brand, mpn and grin attributes.

Here is the documentation: https://support.google.com/merchants/answer/7450276?hl=en