spree/spree-guides — pull request #147 by jdutil (2013-07-29 23:01:39+00:00)
Title: Mention requirement of shipping_category_id on Product.

I'm working on a fix for https://github.com/spree/spree/issues/3188 and we will need to update api & guides references to reflect the new shipping_category_id requirement once merged in spree.

If anyone knows of other references I should be aware of please let me know.