Amazon AWS ItemLookup 13-Digit ISBN

Question

I used to be able to do 13-digit ISBN searches, but now I can't.

Here is the query for the 13-digit ISBN: 9780073380957.

http://ecs.amazonaws.com/onca/xml?AWSAccessKeyId= & ItemId = 9780073380957 & Operation = ItemLookup & ResponseGroup = Images% 2CItemAttributes & Service = AWSECommerceService & Timestamp = 2009- 12-16T14% 3A30% 3A02Z & Version = 2009 -06-01 & Signature =

Returns: f6770ab1-9b3e-48d3-9492-750e8d773c1b0.0053760000000000TrueNewShipASINAmazon19780073380957ImagesItemAttributes1-SubmissionDateAllAWS.InvalidParameterValue9780073380957 invalid value. Change this value and retry the request.

However, a 10-digit ISBN for the same book works:

http://ecs.amazonaws.com/onca/xml?AWSAccessKeyId= & ItemId = 0073380954 & Operation = ItemLookup & ResponseGroup = Images% 2CItemAttributes & Service = AWSECommerceService & Timestamp = 2009- 12-16T14% 3A44% 3A10Z & Version = 2009 -06-01 & Signature =

I use pyaws if that matters.

Answer 1

Turns out I need to specify IdType as "ISBN" and SearchIndex as "Books".

Here is a working request:

http://ecs.amazonaws.com/onca/xml?AWSAccessKeyId=[my_key.BIZ&IdType=ISBN&ItemId=9780073380957&Operation=ItemLookup&ResponseGroup=Images%2CItemAttributes&SerI&Imemiter = [signature]