# Bug Report Ignition 8.3.4 - system.historian.storeDataPoints

**URL:** <https://forum.inductiveautomation.com/t/bug-report-ignition-8-3-4-system-historian-storedatapoints/114798>\
**Category:** Ignition Early Access\
**Tags:** scripting\
**Created:** [March 31, 2026, 12:28pm UTC](https://forum.inductiveautomation.com/t/bug-report-ignition-8-3-4-system-historian-storedatapoints/114798 "2026-03-31T12:28:35Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![anas](https://avatars.discourse-cdn.com/v4/letter/a/7ab992/32.png) [@anas](https://forum.inductiveautomation.com/u/anas)\
**Post date:** [March 31, 2026, 12:28pm UTC](https://forum.inductiveautomation.com/t/bug-report-ignition-8-3-4-system-historian-storedatapoints/114798/1 "2026-03-31T12:28:35Z")

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Hello,

I think there is bug in the implementation of **system.historian.storeDataPoints.**

My setup is basically Ignition Edge 8.3.4, using Internal Historian.

If i use storeDataPoints to write a value into the historian with timestamp A for the first time (no existing real tag) and then write another value for the same tag with timestamp B (where timestamp B is earlier than timestamp A) I see the following in the logs:

 ![Screenshot 2026-03-31 151047](https://us1.discourse-cdn.com/inductiveautomation/original/3X/5/c/5c60b6424be16f9f3d54f7ae4c7cb87741c27657.png)

 ![Screenshot 2026-03-31 150249](https://us1.discourse-cdn.com/inductiveautomation/original/3X/f/6/f6897ae2aae96668407e4629f51fcaf8eecc436c.png)

This appears to be an unhandled exception.

I running the following script inside script console:

```python
GOOD_QUALITY = 192
path_flow = "Type3/008/Flow"

sample_rows = [
("2026-03-20 09:17:16", 44),
("2026-03-20 09:29:15", 55)
]

paths = []

values = []

timestamps = []

qualities = []

for ts_text, flow in sample_rows:
   ts = system.date.parse(ts_text, "yyyy-MM-dd HH:mm:ss")

   paths.append(path_flow)
   values.append(flow)
   timestamps.append(ts)
   qualities.append(GOOD_QUALITY)

   qc = system.historian.storeDataPoints(
   paths=paths,
   values=values,
   timestamps=timestamps,
   qualities=qualities
)
print "QC:", qc
print "Code:", qc.getCode()

```

Could please confirm if this is indeed a bug?

Thanks

---

<div class="post-metadata">

**Author:** ![Kurt.Larson](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kurt.larson/32/6426_2.png) [@Kurt.Larson](https://forum.inductiveautomation.com/u/Kurt.Larson)\
**Post date:** [March 31, 2026, 5:27pm UTC](https://forum.inductiveautomation.com/t/bug-report-ignition-8-3-4-system-historian-storedatapoints/114798/2 "2026-03-31T17:27:28Z")

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Yeah this is unexpected. I’ll file a bug ticket for us to fix this. Thanks for bringing it to our attention.

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<div class="post-metadata">

**Author:** ![SBL\_MC](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/sbl_mc/32/56813_2.png) [@SBL\_MC](https://forum.inductiveautomation.com/u/SBL_MC)\
**Post date:** [May 21, 2026, 7:26pm UTC](https://forum.inductiveautomation.com/t/bug-report-ignition-8-3-4-system-historian-storedatapoints/114798/3 "2026-05-21T19:26:06Z")

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Hi Kurt, do you have a time frame for this? Thanks.

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<div class="post-metadata">

**Author:** ![rsylte](https://avatars.discourse-cdn.com/v4/letter/r/45deac/32.png) [@rsylte](https://forum.inductiveautomation.com/u/rsylte)\
**Post date:** [May 22, 2026, 6:31am UTC](https://forum.inductiveautomation.com/t/bug-report-ignition-8-3-4-system-historian-storedatapoints/114798/4 "2026-05-22T06:31:18Z")

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Hi, I'm new to the Ignition API, so I might have misunderstood this, but I'm calling `system.historian.storeDataPoints()` in my script on v8.3.3, and got it working. According to the doc ([system.historian.storeDataPoints | Ignition User Manual](https://www.docs.inductiveautomation.com/docs/8.3/appendix/scripting-functions/system-historian/system-historian-storeDataPoints)) the paths should be formatted as `"histprov:my_historian:/sys:my_gateway:/prov:my_tag_provider:/tag:Motor_1_Amps"`.