I am trying to create some products and variants via the XMLC-RPC interface (I'm using SAAS). 

I have created the product.template and added the variants on the product.attribute.line and that all works fine, my template is all as expected in Odoo, and I can see the variants on the template.

When you manually create a product template on Odoo, add variants, and save - it actually creates the Product Variants in (I believe) the product.product table. However doing the above via rpc does not seem to trigger this. 

So my questions is: Is there a way I can trigger this? Or must I also populate product.product via rpc? Or am I doing something entirely wrong (quite possible!).