# Alarm Shelving Duration Not Updating When Re-Shelving

**URL:** <https://forum.inductiveautomation.com/t/alarm-shelving-duration-not-updating-when-re-shelving/116882>\
**Category:** Ignition\
**Tags:** ignition83, perspective\
**Created:** [August 24, 2026, 7:46pm UTC](https://forum.inductiveautomation.com/t/alarm-shelving-duration-not-updating-when-re-shelving/116882 "2026-08-24T19:46:30Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Liam\_Dietrich](https://avatars.discourse-cdn.com/v4/letter/l/b5a626/32.png) [@Liam\_Dietrich](https://forum.inductiveautomation.com/u/Liam_Dietrich)\
**Post date:** [August 24, 2026, 7:46pm UTC](https://forum.inductiveautomation.com/t/alarm-shelving-duration-not-updating-when-re-shelving/116882/1 "2026-08-24T19:46:30Z")

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Hi all,

I'm seeing some unexpected behaviour with alarm shelving in Ignition.

The [system.alarm.shelve](https://www.docs.inductiveautomation.com/docs/8.3/appendix/scripting-functions/system-alarm/system-alarm-shelve) documentation states:

> If an alarm is already shelved, this will overwrite the remaining time.

To test this, I shelved an alarm for **12 hours** and then re-shelved it for **1 hour.** The expiry time in the **Alarm Status Table** updated to reflect the new 1-hour duration, so it appears the re-shelve request was accepted. However, once the 1-hour period elapsed, the alarm remained shelved instead of automatically unshelving.

Has anyone encountered this before? Is there something I'm missing about how re-shelving works?

As a workaround, I can manually unshelve before re-shelving, but I wouldn't expect that to be necessary based on the documentation.

Any input is appreciated, thanks!

**Ignition Version:** 8.3.6  
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