04ac3695_se_Notes___Amazon_Web_Services__Issue
[Description] In ListLookup, when you set ListType to “WeddingRegistry,” the operation returns both a WeddingRegistry and, unexpectedly, a WishList. Both lists are based on the same ListId. When you set ListType to “WishList,” ListLookup only returns a WishList, which is correct. [Impact] Do not use ListLookup requests that set ListType to "WeddingRegistry." [Issue] 
WishList is returned even when ListType=WeddingRegistry.
Release: Amazon E-Commerce Service on 2007-07-23 : Release Notes : Amazon Web Services