Product Advertising API
Developer Guide (API Version 2013-08-01)

Search Indices and Locales

Some search indices work in all locales while others do not. Supported search indices in a locale can change.

As more sellers and items are added to the marketplace, more search indices will be supported in each locale.

When you specify a search index in a request, ensure it's supported in the locale of interest. For a list of the search indices supported in different locales, see Locale Reference for the Product Advertising API.