A representation of an information structure that
is passed into and out of service operations. As the name implies, parameter types are used to type the
parameters on a service operation.
A parameter type contains a set of attributes which may
either be typed by a primitive type or in
turn by another parameter type. Where there is a domain model, the parameter types are derived from domain types (the type definitions found in a domain model).
Alternatively, they are based on information types that are themselves based on domain types.
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