# Documentation on when particular telemetry metadata information was made available

**URL:** <https://forum.communityhealthtoolkit.org/t/documentation-on-when-particular-telemetry-metadata-information-was-made-available/1136>\
**Category:** Technical Support\
**Tags:** documentation\
**Created:** [February 19, 2021, 11:29am UTC](https://forum.communityhealthtoolkit.org/t/documentation-on-when-particular-telemetry-metadata-information-was-made-available/1136 "2021-02-19T11:29:38Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![yuv](https://communityhealthtoolkit.b-cdn.net/user_avatar/forum.communityhealthtoolkit.org/yuv/32/320_2.png) [@yuv](https://forum.communityhealthtoolkit.org/u/yuv)\
**Post date:** [February 19, 2021, 11:29am UTC](https://forum.communityhealthtoolkit.org/t/documentation-on-when-particular-telemetry-metadata-information-was-made-available/1136/1 "2021-02-19T11:29:38Z")

</div>

I’m exploring [Community Health Toolkit](https://github.com/medic/cht-core/) 's user telemetry through [this](https://docs.communityhealthtoolkit.org/apps/guides/performance/telemetry/) really helpful document.

On [performance data](https://docs.communityhealthtoolkit.org/apps/guides/performance/telemetry/#performance-data) section, it was really helpful to know whether my version of CHT has particular field available or not since there’s an information from which version this information was added. However, there were some metadata fields unavailable on the version I am using, and it’d be great to see when any particular metadata field was available in [metadata](https://docs.communityhealthtoolkit.org/apps/guides/performance/telemetry/#metadata) section.

---

<div class="post-metadata">

**Author:** ![gareth](https://communityhealthtoolkit.b-cdn.net/user_avatar/forum.communityhealthtoolkit.org/gareth/32/62_2.png) [@gareth](https://forum.communityhealthtoolkit.org/u/gareth)\
**Post date:** [February 21, 2021, 7:41pm UTC](https://forum.communityhealthtoolkit.org/t/documentation-on-when-particular-telemetry-metadata-information-was-made-available/1136/2 "2021-02-21T19:41:23Z")

</div>

Thanks for pointing that out! I’ve created [a PR](https://github.com/medic/cht-docs/pull/435) to add the versions to the metadata section.

In summary, most fields were added in 3.4.0 when the telemetry feature was launched. The `versions` property was added in 3.5.0. The `deviceInfo` section was added more recently in 3.8.0 but note that it is only captured when running in the medic-android app, not when running in the browser.

---

<div class="post-metadata">

**Author:** ![gareth](https://communityhealthtoolkit.b-cdn.net/user_avatar/forum.communityhealthtoolkit.org/gareth/32/62_2.png) [@gareth](https://forum.communityhealthtoolkit.org/u/gareth)\
**Post date:** [February 22, 2021, 5:47pm UTC](https://forum.communityhealthtoolkit.org/t/documentation-on-when-particular-telemetry-metadata-information-was-made-available/1136/3 "2021-02-22T17:47:26Z")

</div>

Update: The PR has been merged so you can see the [metadata versions in the docs](https://docs.communityhealthtoolkit.org/apps/guides/performance/telemetry/#metadata).