You can use IBM® Rational® Integration Tester to
create and modify message-based stubs.
Message-based stubs overview
A message-based stub is essentially an IBM Rational Integration Tester resource
that listens for incoming messages on a particular transport. A stub
can reply to specific messages or message-types, matched according
to incoming filters, by using message case actions.
Creating message-based stubs
In IBM Rational Integration Tester,
there are several methods that you can use to create a message-based
stub.
Modifying message-based stubs
In IBM Rational Integration Tester 5.4.0
or later, you can use either the Test Editor or the Stub Editor to
create, modify, and enhance any legacy or new stubs created by Rational Integration Tester.