Amazon Product Advertising API Developer's Manual page 320

Product Advertising API Developer Guide
TransactionDateEpoch
TransactionId
TransactionItem
TransactionItemId
TransactionItems
Type
UPC
UPCList
UPCListElement
URL
URLEncodedHMAC
UserAgent
UserId
Response Elements
The date on which the transaction began in the form of epoch
seconds.
Ancestry: Transaction
A series of dash-separated integers, such as 111-222-333, that
uniquely identify a transaction.
Ancestry: Transaction
Container for all of the information related to a specified transaction.
Ancestry: Transaction
A string that uniquely identifies a transaction item.
Ancestry: Transaction/TransactionItems/TransactionItem
Container for TransactionItem
Ancestry: Transaction
Type, depending on the context. If the ancestor is TopItemSet, the
Type is the ranking criteria, such as MostGifted.
Ancestry: ItemAttributes/Languages/Language, TopItemSet
Universal Product Code, which is a 12 digit number, 6 of which
represents an item's manufacturer. These numbers are translated
into a bar code that is printed on an item or its packaging.
Ancestry: ItemAttributes
SellerListing
The container for one or more
Ancestry: ItemAttributes
A possible UPC for the ASIN.
Ancestry: ItemAttributes/UPCList
URL of an image.
Ancestry:
Variations/Item/ImageSets/ImageSet/LargeImage
Variations/Item/ImageSets/ImageSet/SwatchImage
Variations/Item/ImageSets/ImageSet/MediumImage
Variations/Item/ImageSets/ImageSet/SmallImage
A URL-encoded version of the HMAC that can be used directly in
a request.
Ancestry: Cart
The client application, for example, web browsers, search engine
crawlers, mobile phones, screen readers and braille browsers. The
text associated with UserAgent contains the application name,
version, host operating system, and language.
Ancestry: OperationRequest
An alphanumeric token that uniquely identifies the customer that
tagged the entity.
Ancestry:
API Version 2011-08-01
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UPCListElement (p. 313) attributes.