I went through the process of creating variations for sizes of a base product and the appropriate modifiers (slug append and sku_builder) also managed to build the products. Each product has its own ID and I can see the child products in the dashboard and when I make a call to /v2/products however when trying to add one of the child products to a cart I get a 500 Internal Server Error:
‘There was an internal server error, you can report with your request id.’
Adding one of the parent products to the cart works perfectly fine. When adding child products to the cart should I be using the child products ID?