Amazon Product Advertising API Developer's Manual page 197

Product Advertising API Developer Guide
Availability
All locales, however, the parameter support varies by locale.
Request Parameters
Name
Condition
IdType
IncludeReviewsSummary
ItemId
ItemLookup
Description
Specifies an item's condition. If Condition is set to "All," a
separate set of responses is returned for each valid value
of Condition. The default value is "New" (not "All"). So, if
your request does not return results, consider setting the
value to "All." When the value is "New," the ItemSearch
Availability parameter cannot be set to "Available." Amazon
only sells items that are "New."
Type: String
Default: New
Valid Values: Used | Collectible | Refurbished, All
Type of item identifier used to look up an item. All IdTypes
except ASINx require a SearchIndex to be specified.
Type: String
Default: ASIN
Valid Values: SKU | UPC | EAN | ISBN (US only, when
search index is Books). UPC is not valid in the CA locale.
When set to true , returns the reviews summary within
the Reviews iframe.
Type: Boolean
Default: True
Valid Values: True | False
One or more (up to ten) positive integers that uniquely
identify an item. The meaning of the number is specified
by IdType . That is, if IdType is ASIN, the ItemId value
is an ASIN. If ItemId is an ASIN, a search index cannot
be specified in the request.
Type: String
Default: None
Constraints: Must be a valid item ID. For more than one
ID, use a comma-separated list of up to ten IDs.
API Version 2011-08-01
190
Required
No
No
No
Yes