# Tag Error: Uncertain\_InitialValue **URL:** \ **Category:** Ignition\ **Tags:** ignition81\ **Created:** [July 13, 2022, 7:45pm UTC](https://forum.inductiveautomation.com/t/tag-error-uncertain-initialvalue/61872 "2022-07-13T19:45:10Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![Aman\_Pawar](https://avatars.discourse-cdn.com/v4/letter/a/7ba0ec/32.png) [@Aman\_Pawar](https://forum.inductiveautomation.com/u/Aman_Pawar)\ **Post date:** [July 13, 2022, 7:45pm UTC](https://forum.inductiveautomation.com/t/tag-error-uncertain-initialvalue/61872/1 "2022-07-13T19:45:10Z")
I’ve faced this error on OPCUA tags. I’ve disabled and then enable the OPC device connection on the gateway. After that the error is gone. But want to know the reason behind this error “Uncertain\_InitialValue”. Does anyone knows why this kind of error occurs? Regards, Aman Pawar ---
**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\ **Post date:** [July 13, 2022, 7:46pm UTC](https://forum.inductiveautomation.com/t/tag-error-uncertain-initialvalue/61872/2 "2022-07-13T19:46:06Z")
It’s not necessarily an error, it’s the initial state/value for an OPC tag. It might mean that the OPC UA server simply hasn’t sent you a tag value yet. ---
**Author:** ![Aman\_Pawar](https://avatars.discourse-cdn.com/v4/letter/a/7ba0ec/32.png) [@Aman\_Pawar](https://forum.inductiveautomation.com/u/Aman_Pawar)\ **Post date:** [July 13, 2022, 7:47pm UTC](https://forum.inductiveautomation.com/t/tag-error-uncertain-initialvalue/61872/3 "2022-07-13T19:47:23Z")
But the tags were showing that state for more than 24 hours. I want to know the cause. ---
**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\ **Post date:** [July 13, 2022, 7:48pm UTC](https://forum.inductiveautomation.com/t/tag-error-uncertain-initialvalue/61872/4 "2022-07-13T19:48:09Z")
Can you make the connection to that server without security and get a Wireshark capture to troubleshoot? ---
**Author:** ![Aman\_Pawar](https://avatars.discourse-cdn.com/v4/letter/a/7ba0ec/32.png) [@Aman\_Pawar](https://forum.inductiveautomation.com/u/Aman_Pawar)\ **Post date:** [July 14, 2022, 2:06pm UTC](https://forum.inductiveautomation.com/t/tag-error-uncertain-initialvalue/61872/5 "2022-07-14T14:06:19Z")
No, is there any other way? ---
**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\ **Post date:** [July 14, 2022, 2:18pm UTC](https://forum.inductiveautomation.com/t/tag-error-uncertain-initialvalue/61872/6 "2022-07-14T14:18:28Z")
It’s a lot messier and you’ll probably need to work with support, but something like: Delete or disable all tags you’ve currently created from this server. Search for these loggers and set them to TRACE level: `OpcUaSubscriptionModel`, `OpcUaSubscriptionSynchronizer`, `DataValueConsumer`. (see [docs for changing log levels](https://docs.inductiveautomation.com/display/DOC81/Diagnostics+-+Logs#DiagnosticsLogs-ChangingLoggingLevels)) Subscribe to a single tag. It might be easier to just use Quick Client in the gateway. Make a note of the NodeId / OPC Item Path, we’ll need to know what it is. After ~30 seconds have elapsed and the quality is still `Uncertain_InitialValue` get the logs and upload them here or give them to the support agent. This will allow us to see if the item is being successfully created and then whether or not the server is sending a value. The problem is these loggers will be very noisy. What server is it you’re connected to?