I intend to develop a client for Amazon's Marketplace webservices (MWS). My requirements would be to update the order, synchronize the order status, get the order details using the APIs they have.
However, I could not find a Sandbox environment to test these scenarios. Amazon has a payment Sandbox I understand, but is there a sandbox available to test these web-services? If not, are there any pointers on how to go about testing the above mentioned scenarios with Amazon MWS?