title: Jmeter script of post request still running successfully in case mandatory parameter is deleted
body: <p>I am new in Jmeter and doing some R &amp; D 
  I recorded a signup scenario where some fields are mandatory to give like username, customerid etc.</p>
  
  <p>I playback that script that run successfully which is fine but if i replace the value of customerid by blank and run again, the test plan still running without errors </p>
  
  <p>In my opinion there should thrown an error if customerid is not valid</p>
  
  <p><a href="https://i.stack.imgur.com/LbZ8y.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/LbZ8y.png" alt="Result"></a></p>
  
  <p>Please Help!</p>