Attach Existing Product Category by idCopy Pagepatch https://api.sandbox.hint.com/api/partner/partner_products/{partner_product_id}/categories/{id}Attach an existing category (by id) to the product.Path Paramspartner_product_idstringrequiredUnique Partner Product IDidstringrequiredUnique Partner Product Category IDResponse 200Successful responseUpdated 3 days ago