Map Shopify Product Category to Google Shopping Category#45

Shopify 2.0 now has their unified Product Category (which is a requirement to use their SHOP app) from talking to Shopify these match 1:1 with Google’s Shopping Categories.

Can you add functionaly to let us map from Shopify to Google? This will help item scores and prevent items being miscategorised. Unfortunately we cannot map it as a metafield as Shopify only expose it through their API’s.

The safest method would appear to be to map ‘ProductTaxonomyNode.
fullName’ as shown on:
https://shopify.dev/api/admin-graphql/2022-01/objects/ProductTaxonomyNode

Google will accept that as a text value as mentioned here:
https://support.google.com/merchants/answer/6324436?hl=en-GB

We can’t rely on ID numbers as while the catergories match 1:1 the ID numbers do not, see:
http://www.google.com/basepages/producttype/taxonomy-with-ids.en-GB.txt
https://help.shopify.com/manual/products/product_taxonomy.txt