genexus - Jmeter 440 error code. How can I resolve this error?

Question

I am working with Jmeter and Blazemeter in a login script for a web made with Genexus. The problem that I am having is in the POST.

Whenever I try to make a POST http petition, Jmeter throws the next thing:

As you can see, in the response body, I am having a 440 http error code. This is a login Time-out which means the client's session has expired and must log in again. I used to have a 403 error code but now, after doing some arrangements, I have 440. Do you have any suggestions on how to resolve this?

Answer 1

Any HTTP Status 4xx is a client error, to wit you're sending an incorrect request.

If custom 440 http status code means "session has expired" my expectation is that you have a recorded hard-coded session ID somewhere in your request parameters or headers

You should carefully inspect previous response(s) and look for something which appears to be a session id, once you find it - extract it using a suitable JMeter's Post-Processor and replace hard-coded session ID with the appropriate JMeter Variable. The process is known as correlation