All tests have an expiration date associated with the test session invitation
This period of time is set by the company asking you to take the test
If your session expires, you will get an error message saying your eTicket has expired and you must contact the company who sent you the invitation to resolve the issue and/or complete the remaining test
Your eTicket is "redeemed"
If you receive an error message that the eTicket number has been redeemed already, the test has been completed
Once a test is completed, the results are sent to the company asking you to take the test
If your test completed and you did not mean for it to complete, you will have to contact the company who sent you the eTicket