Amazon Product Advertising API Developer's Manual page 189

Product Advertising API Developer Guide
Request Parameters
Name
AssociateTag
CartId
CartItemId
HMAC
MergeCart
CartGet
Description
Specifies the Associate who is making the request. An
Associate tag, also known as an Associate ID, is an
automatically generated unique identifier. When you log
in to the Amazon Associates website for your locale, the
page that you are directed to includes a message that says
"Signed in as" followed by your Associate tag.
The Associate tag that you used to create a cart must also
be used on all other operations associated with the same
cart.
Type: String
Default: None
Valid Value: The same Associate tag that was used in the
related CartCreate request.
Constraint:
Alphanumeric token returned by CartCreate that
identifies a cart.
Type: String
Default: None
Valid Values: Value returned by CartCreate
Alphanumeric token that uniquely identifies an item in a
cart. Once an item, specified by an ASIN or OfferListingId,
has been added to a cart, you must use the CartItemId
to refer to it. The other identifiers will not work.
Type: String
Default: None
Valid Values: Value returned by CartCreate
The Hash Message Authentication Code is an encrypted
alphanumeric token that is used to authenticate requests.
Type: String
Default: None
Valid Values: Value is calculated using request parameters,
their values, a cryptographic function, and the Secret Key,
which acts as the "key" for the function.
This parameter is deprecated.When a customer purchases
items in a remote shopping cart, the items are added to
the customer's Amazon retail shopping cart.
API Version 2011-08-01
182
Required
Yes
Yes
Yes
Yes
Deprecated