# OPC tag timestamp updates every 10s in Bad\_NodeIdUnknown state - can this behavior be adjusted?

**URL:** <https://forum.inductiveautomation.com/t/opc-tag-timestamp-updates-every-10s-in-bad-nodeidunknown-state-can-this-behavior-be-adjusted/116945>\
**Category:** Ignition\
**Created:** [August 31, 2026, 5:19am UTC](https://forum.inductiveautomation.com/t/opc-tag-timestamp-updates-every-10s-in-bad-nodeidunknown-state-can-this-behavior-be-adjusted/116945 "2026-08-31T05:19:34Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![karl.fredrik.wirgene](https://avatars.discourse-cdn.com/v4/letter/k/c89c15/32.png) [@karl.fredrik.wirgene](https://forum.inductiveautomation.com/u/karl.fredrik.wirgene)\
**Post date:** [August 31, 2026, 5:19am UTC](https://forum.inductiveautomation.com/t/opc-tag-timestamp-updates-every-10s-in-bad-nodeidunknown-state-can-this-behavior-be-adjusted/116945/1 "2026-08-31T05:19:34Z")

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**Environment** : Ignition 8.3.7, MQTT Transmission 5.0.4, Sparkplug B to a third-party MQTT broker. OPC UA source is a third-party server; Ignition is the OPC UA client (subscription based).

**Problem** : When an OPC UA node becomes unavailable (source-server update, or the tag is deleted upstream), Ignition reports Bad\_NodeIdUnknown and refreshes the tag’s timestamp every ~10 s. This is probably wanted behavior for a failed item retry loop, i have not found the setting which controls this.

My challenge is that the MQTT transmission module sees the timestamp update of the tag and publishes a data point with a Null value each 10 seconds. see: [Suppress DDATA publishing for tags in "Error" state without disabling them — MQTT Transmission 5.0.4 - Ignition Modules / MQTT Modules - Cirrus Link Forum](https://forum.cirrus-link.com/t/suppress-ddata-publishing-for-tags-in-error-state-without-disabling-them-mqtt-transmission-5-0-4/881)

**reproduction** : Take a working subscribed OPC tag and change its Item Path to a non-existing node (simulating a deletion). Observe DDATAs has null values for the tag every 10 second.

**Question** : Any good recommendations on how to handle this? Is there a way to prevent the change events from occurring when in this state? or at least increasing the failed item retry loop time.

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/7/8/78814f7f04466833c0a732564b07830059fc2205.png)

This error tag is of course always a transient problem, but manual intervention takes time.