What Are The Dynamic Parameters In Team System Web Test?

When you finish to record a web test tells you that it checks for dynamic parameters, in case it finds one or more it asks if you like to add them to your test, so what is that dynamic parameters and what Team System adds to your recorded test?

Dynamic parameters are the parameters generated dynamically when running a web application and that are passed in the query string parameter values and form post parameter values.

Team System runs the web test again in the background searching for such parameters, when found it generates a script that will gather the data dynamically and pass it in the same method the web application does, doing that is necessary for the correct run of the recorded test.

That script that I have mentioned is using an extraction rule that captures the parameter from the HTTP response and binds it to a subsequent HTTP request.

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