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

PortType

The association between operation names and their request and response definitions is created by the PortType element in the WSDL, for example:

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<portType name="AWSECommerceServicePortType"> ... <operation name="ItemSearch"> <input message="tns:ItemSearchRequestMsg" /> <output message="tns:ItemSearchResponseMsg" /> </operation>

In this example, the operation, ItemSearch, is associated with its request and response definitions, ItemSearchRequestMsg and ItemSearchResponseMsg. The keywords, input and output, identify the operation's request and response definitions, respectively.