Different Ways to exit from a QTP test: Using ExitTest, AOM and LoadandRunAction

In QTP, Framework should ensure that test is exited as soon test is failed, since there is no point in going forward with execution.
To ensure proper exit from QTP test, we can either use error handling using recovery scenario or vb script. In case of error handling using vbscript, we can exit a test at runtime in following ways.

Using ExitTest Statement

ExitTest statement exits a test once executed in script.But in scripts with functions called from other functions in different libraries and in case if there is multiple nesting of functions within different libraries, ExitTest statement on execution does not stop the test execution.
To understand this, suppose there is Test A and there are 4 different libraries(vbs files) f1,f2,f,3,f4  in which functions are stored and the action in Test A calls function from library f1 which further calls function from library f2 ans so on. In such cases, sometimes exitTest does not get executed and moves to next test without exiting the test.
To exit from test in scenario where ExitTest is not working properly, we can exit from test in below ways:

 Using QTP AOM

 Use following code to exit test in case exitstatement is not working.
Dim qtAppObj

Set qtAppObj = CreateObject("quicktest.application")

qtAppObj.Test.Stop

Using LoadandRunAction

Create a test with Action  Action1. In Action , only write ExitTest. Save the test.

Now in the test, where exitTest is not working properly, instead of ExitTest, write below code:

LoadandRunAction "c:\Test1","Action1"

Once this line of code is executed, QTP will exit the test.

Please go through the below posts for understanding of :

error handling using vbscript in qtp
error handling using recovery scenario
understanding QTP Automation Object Model