# OPC unmounted volume error

**URL:** <https://forum.inductiveautomation.com/t/opc-unmounted-volume-error/54243>\
**Category:** Ignition\
**Tags:** ignition81\
**Created:** [December 17, 2021, 12:59pm UTC](https://forum.inductiveautomation.com/t/opc-unmounted-volume-error/54243 "2021-12-17T12:59:05Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![daniel\_schlichte](https://avatars.discourse-cdn.com/v4/letter/d/439d5e/32.png) [@daniel\_schlichte](https://forum.inductiveautomation.com/u/daniel_schlichte)\
**Post date:** [December 17, 2021, 12:59pm UTC](https://forum.inductiveautomation.com/t/opc-unmounted-volume-error/54243/1 "2021-12-17T12:59:05Z")

</div>

Quality: Bad(“Bad\_DataUnavailable: Expected data is unavailable for the requested time range due to an un-mounted volume.”)

Can anyone shed some light on this error? I am getting this on tags connecting to a third party OPC server.

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/1/b/1b70e6fe072ce93656487f93f0b141ca56103aa2.png)

---

<div class="post-metadata">

**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\
**Post date:** [December 17, 2021, 1:58pm UTC](https://forum.inductiveautomation.com/t/opc-unmounted-volume-error/54243/2 "2021-12-17T13:58:47Z")

</div>

That kind of message comes from the OPC server, so you’ll need to ask that 3rd party.