Using the ItemSearch Availability Parameter
The ItemSearch
Availability parameter enables you to
search only for items that are available. The only valid value for
Availability is "Available," as shown in the next
example.
http://ecs.amazonaws.com/onca/xml? Service=AWSECommerceService& AWSAccessKeyId=[AWS Access Key ID]
& Operation=ItemSearch
& MerchantId=All& Condition=All& Availability=Available& SearchIndex=Apparel& Keywords=Shirt
Items can become unavailable quickly. Even though this parameter filters out unavailable items, checking that an item has an OfferListingId is still recommended.