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

Performing Multiple ItemLookups in One Request

The other way to execute multiple ItemLookup requests in one request is to use a comma-separated list of ItemIds, for example:

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http://webservices.amazon.com/onca/xml? Service=AWSECommerceService& AWSAccessKeyId=[AWS Access Key ID]& AssociateTag=[Associate ID]& Operation=ItemLookup& ItemId=B00008OE6I,B35987036I,B0002546I,B25468OE6I,B09788OE6I,B00453OE6I& IdType=ASIN& ResponseGroup=OfferFull& Condition=All& Timestamp=[YYYY-MM-DDThh:mm:ssZ] &Signature=[Request Signature]

The example shows six ItemIds in the request. ItemLookup will be executed six times, one for each ItemId. You can specify up to ten ItemIds.

Tip

Be careful not to add spaces before or after the commas in the comma-separated list of ItemIds.