Attribute return_policy_id added to products
Every seller can now define multiple return policies that can be used with their products. We have introduced a new endpoint to retrieve all defined return policies and we have also added the possibility to add a
return_policy_id attribute to products when creating or updating them.
Due to legal reasons this attribute is required to be set, but to avoid breaking the functionality for existing users, we will assign the return policy with the lowest ID. The sellers will still need to create at least one return policy for the API to continue to work after June 13th 2014.