This means that the test has been reused. Repeat with an unused test. You can also see this error if the test is left in the monitor when the monitor is turned on.
To clear any Error messages, either press STAR, or switch the tracker off, take the test stick out, turn it on again and follow the instructions on the screen as normal.
If you experience any issues that you are unable to troubleshoot, our Care Team can help. Please contact us by email at: firstname.lastname@example.org