Amazon Product Advertising API Developer's Manual page 214

Product Advertising API Developer Guide
<Error>
<Code>AWS.ECommerceService.NoSimilarities</Code>
<Message>There are no similar items for this ASIN: B00006WREH.</Message>
</Error>
This result is very often the case if the items belong to different search indices. The error can occur,
however, even when the items share the same search index.
Similarity is a measurement of similar items purchased, that is, customers who bought X also bought Y
and Z. It is not a measure, for example, of items viewed, that is, customers who viewed X also viewed Y
and Z.
Items returned can be filtered by:
• Condition—Describes the status of an item. Valid values are All, New (default), Used, Refurbished or
Collectible. When the Availability parameter is set to "Available," the Condition parameter cannot be
set to "New."
Examples
Return items that are similar to a list of items.
http://webservices.amazon.com/onca/xml?
Service=AWSECommerceService&
AWSAccessKeyId=[AWS Access Key
Operation=SimilarityLookup&ItemId=ASIN1,ASIN2,ASIN3
&Timestamp=[YYYY-MM-DDThh:mm:ssZ]
&Signature=[Request Signature]
This request returns the intersection of the similarities for each ASIN. The response to this request is
shown in Response to Sample Request (p.
Return up to ten items that are similar to any of the ASINs specified.
http://webservices.amazon.com/onca/xml?
Service=AWSECommerceService&
AWSAccessKeyId=[AWS Access Key
Operation=SimilarityLookup&ItemId=ASIN1,ASIN2,ASIN3&
SimilarityType=Random
&Timestamp=[YYYY-MM-DDThh:mm:ssZ]
&Signature=[Request Signature]
This request returns the union of items that are similar to all of the ASINs specified. Only ten items can
be returned and those are picked randomly from all of the similar items. Repeating the operation could
produce different results.
SimilarityLookup
ID]&
167).
ID]&
API Version 2011-08-01
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