> For the complete documentation index, see [llms.txt](https://help.boomerang3.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.boomerang3.com/boomerang-3-calibration-app-manual/performing-the-calibration/calibration-expired.md).

# Calibration expired

If the calibration is not finalised within 120 minutes (2 hours), its status in B3 is changed to expired. The calibrated MP status is changed from "In calibration" to "Normal".

<figure><img src="/files/sLcNMmqfhyE7rhJCOhwG" alt=""><figcaption></figcaption></figure>

The expired calibration cannot be finalised.&#x20;

Tap Recalibrate to [Recalibrate](/boomerang-3-calibration-app-manual/performing-the-calibration/recalibrate.md).

Tap Discard to discard it. The following message will be displayed:

<figure><img src="/files/UwSGoVNWJSaYgvAl6JCW" alt=""><figcaption></figcaption></figure>

Click OK. The row will be ready for a new calibration.


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