Setting product category using REST API

[jjdesign1]

Hi, i've been using Python to try and import my Ebay products to Shopify automatically to save time on manually copying our catologue from Ebay.

I am using the API (I'm using the REST API, but happy for suggestions using GraphQL) to create a product, how can I set the product category and the category metafields in the same way I can when creating a product manually?

Currently I cannot set it and it's blank (photo 1) and then of course leading to empty metafields. Eventhough I try define metafields on my end, it just chucks out access to this namespace and key on metafields for this resource type is not allowed. Any help is greatly appreciated

[BuyCheapCentral]

Hi, how do you set this up inside Shopify with existing products ? I'm not sure where to apply this code. I'm new here.. thanks

[jjdesign1]

Just wondering if anyone has any further suggestions?