When the "reverse" option is enabled then the monitoring profile instructs the system to mark the target resource down when the test is successful. This setting is useful, for example, if the content on your web site home page is dynamic and changes frequently, you may want to set up a reverse ECV service check that looks for the string Error. A match for this string means that the web server was down. To use this option, you must specify values for Send String and Receive String.

Yes: Specifies that the monitor operates in reverse mode.
No: Specifies that the monitor does not operate in reverse mode.