Google Feed issues with items priced by Attributes

Facing issues with regards to new rules by Google Merchant Center

We have single products with multiple attributes and some attributes add to the price.

They want us to have multiple SKU variants with to size and prices.

We infact have more than size as attributes there are several more option names added too.

Once we submit the SKU variants with unique Item IDs in the product feed, we would be able to resolve said issue on GMC.

Please guide.

I hope you find answer, we're having the same issue. We're also concerned about the requirements for a GTIN number to be included in the feed.

You need to bridge this gap in ZC core funcionality with modifications that do actually provide you with SKUs for each of the products attributes...Stock by Attributes (free, not tested by me) or Products' Options' Stock Manager (commercial, used by me).
Then you can go about modifying the feed code to use these SKUs..."Hours of fun for all the family" as the saying goes.