# Bad\_NodeIdUnknown: The node id refers to a node that does not exist in the server address space **URL:** \ **Category:** General Discussion\ **Tags:** ignition81, perspective\ **Created:** [July 26, 2022, 2:52pm UTC](https://forum.inductiveautomation.com/t/bad-nodeidunknown-the-node-id-refers-to-a-node-that-does-not-exist-in-the-server-address-space/62309 "2022-07-26T14:52:49Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![ahawes](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/ahawes/32/36337_2.png) [@ahawes](https://forum.inductiveautomation.com/u/ahawes)\ **Post date:** [July 26, 2022, 2:52pm UTC](https://forum.inductiveautomation.com/t/bad-nodeidunknown-the-node-id-refers-to-a-node-that-does-not-exist-in-the-server-address-space/62309/1 "2022-07-26T14:52:49Z")
Good morning Team, I am getting this error on a tag with a connection to Ignition OPC UA Server. Any idea on where I should look? ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/4/f/4fb3e5a3b77e222e9fe10e7134bc5a3784b858f2.png) ---
**Author:** ![Arnaud\_Declerck](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/arnaud_declerck/32/44872_2.png) [@Arnaud\_Declerck](https://forum.inductiveautomation.com/u/Arnaud_Declerck)\ **Post date:** [July 26, 2022, 2:54pm UTC](https://forum.inductiveautomation.com/t/bad-nodeidunknown-the-node-id-refers-to-a-node-that-does-not-exist-in-the-server-address-space/62309/2 "2022-07-26T14:54:11Z")
Hi, what opc UA server are you using ? regards ---
**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 26, 2022, 2:55pm UTC](https://forum.inductiveautomation.com/t/bad-nodeidunknown-the-node-id-refers-to-a-node-that-does-not-exist-in-the-server-address-space/62309/3 "2022-07-26T14:55:27Z")
This is the server telling you it doesn’t recognize the OPC Item Path. From the syntax it looks like a maybe a Logix device of some kind… so maybe it’s not connected, hasn’t browsed, or that tag simply doesn’t exist in the PLC program. ---
**Author:** ![ahawes](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/ahawes/32/36337_2.png) [@ahawes](https://forum.inductiveautomation.com/u/ahawes)\ **Post date:** [July 26, 2022, 3:05pm UTC](https://forum.inductiveautomation.com/t/bad-nodeidunknown-the-node-id-refers-to-a-node-that-does-not-exist-in-the-server-address-space/62309/4 "2022-07-26T15:05:34Z")
Thanks Kevin, that it what I thought. I need to verify what it is actually in the PLC. ---
**Author:** ![hewking32](https://avatars.discourse-cdn.com/v4/letter/h/b5ac83/32.png) [@hewking32](https://forum.inductiveautomation.com/u/hewking32)\ **Post date:** [November 17, 2022, 4:35pm UTC](https://forum.inductiveautomation.com/t/bad-nodeidunknown-the-node-id-refers-to-a-node-that-does-not-exist-in-the-server-address-space/62309/5 "2022-11-17T16:35:51Z")
hi Kevin I wonder if using Kepware Operating Mode/Simulated to YES will suppress tags configuration errors ? ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/7/5/75f05d0b0293bf09e95d3e52d345c0b2e526572b.png) ---
**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:** [November 17, 2022, 5:05pm UTC](https://forum.inductiveautomation.com/t/bad-nodeidunknown-the-node-id-refers-to-a-node-that-does-not-exist-in-the-server-address-space/62309/6 "2022-11-17T17:05:42Z")
I don't know, you'd have to ask Kepware support probably. ---
**Author:** ![hewking32](https://avatars.discourse-cdn.com/v4/letter/h/b5ac83/32.png) [@hewking32](https://forum.inductiveautomation.com/u/hewking32)\ **Post date:** [November 17, 2022, 5:11pm UTC](https://forum.inductiveautomation.com/t/bad-nodeidunknown-the-node-id-refers-to-a-node-that-does-not-exist-in-the-server-address-space/62309/7 "2022-11-17T17:11:24Z")
thanks for reply ---
**Author:** ![Joze\_Cvelbar](https://avatars.discourse-cdn.com/v4/letter/j/4af34b/32.png) [@Joze\_Cvelbar](https://forum.inductiveautomation.com/u/Joze_Cvelbar)\ **Post date:** [November 21, 2022, 12:57pm UTC](https://forum.inductiveautomation.com/t/bad-nodeidunknown-the-node-id-refers-to-a-node-that-does-not-exist-in-the-server-address-space/62309/8 "2022-11-21T12:57:40Z")
Hi Kevin. I have the same issue as ahawes. But I can't find the solution. I have checked the path and it looks OK. How can I find where is the problem? In IgnitionEdge the device is connected ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/5/d/5d69985032dcca4f7863d779de2ca1d2bb85c2ed.png) Thanks for feedback. Best regards ---
**Author:** ![ahawes](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/ahawes/32/36337_2.png) [@ahawes](https://forum.inductiveautomation.com/u/ahawes)\ **Post date:** [November 21, 2022, 1:23pm UTC](https://forum.inductiveautomation.com/t/bad-nodeidunknown-the-node-id-refers-to-a-node-that-does-not-exist-in-the-server-address-space/62309/9 "2022-11-21T13:23:37Z")
Morning Joze, I figured mine out by going to the PLC and looking at all the parameters. When I first copied over all my tags over from a previous project the paths were slightly different. I am not going back through and checking the PLC parameters and making corrections as needed. ---
**Author:** ![Joze\_Cvelbar](https://avatars.discourse-cdn.com/v4/letter/j/4af34b/32.png) [@Joze\_Cvelbar](https://forum.inductiveautomation.com/u/Joze_Cvelbar)\ **Post date:** [November 21, 2022, 1:38pm UTC](https://forum.inductiveautomation.com/t/bad-nodeidunknown-the-node-id-refers-to-a-node-that-does-not-exist-in-the-server-address-space/62309/10 "2022-11-21T13:38:58Z")
Hi, We are almost at the end of the workday on this side of Atlantic. 🙂 I also copied from a non RaspberyPi device to RaspberryPi device. Siemens side stayed exactly the same. Where did you find the change? In Ignition Designer or IgnitionEdge or PLC? BR ---
**Author:** ![ahawes](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/ahawes/32/36337_2.png) [@ahawes](https://forum.inductiveautomation.com/u/ahawes)\ **Post date:** [November 21, 2022, 2:02pm UTC](https://forum.inductiveautomation.com/t/bad-nodeidunknown-the-node-id-refers-to-a-node-that-does-not-exist-in-the-server-address-space/62309/11 "2022-11-21T14:02:15Z")
I found the difference in the PLC. For example: So, on the photoeyes had a PEType of “Jam” but the tags in the PLC were “Exit” which caused this error. ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/4/6/46fbf8d12ebfdd3c45bda137ea21958f2ee30a76.png) Changing that to the correct tag corrected the issue. You can tell if the path is incorrect by looking at the Ignition tags. If the tags for the photoeye that you are looking at say “Error\_Configuration” then the PLC tag path is incorrect. We went in a verified PEType for that error should have said Exit\_PE and not Jam. ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/e/5/e522fe142d9e0a0028da49f0bb9babd882302ccf.png) ---
**Author:** ![Joze\_Cvelbar](https://avatars.discourse-cdn.com/v4/letter/j/4af34b/32.png) [@Joze\_Cvelbar](https://forum.inductiveautomation.com/u/Joze_Cvelbar)\ **Post date:** [November 21, 2022, 2:34pm UTC](https://forum.inductiveautomation.com/t/bad-nodeidunknown-the-node-id-refers-to-a-node-that-does-not-exist-in-the-server-address-space/62309/12 "2022-11-21T14:34:03Z")
Hi, Thanks for hint. I am afraid that my issue is in license. On Opto22 PLC I am running with bought license. On test environment (RaspberryPi) I am running with trial version of Ignition. This is the only difference I could find. ---
**Author:** ![Joze\_Cvelbar](https://avatars.discourse-cdn.com/v4/letter/j/4af34b/32.png) [@Joze\_Cvelbar](https://forum.inductiveautomation.com/u/Joze_Cvelbar)\ **Post date:** [November 22, 2022, 9:06am UTC](https://forum.inductiveautomation.com/t/bad-nodeidunknown-the-node-id-refers-to-a-node-that-does-not-exist-in-the-server-address-space/62309/13 "2022-11-22T09:06:31Z")
@ahawes Your hint was absolutely correct. The tag name must be 100% same as in (in my case) Siemens TIA portal. Otherwise it shall not work. On attached image I displayed same tag but named correct (humidity) and incorrect (NewTag) ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/b/c/bc82d03522d6960b08bd9c0d5a09cb69103626a5.png) ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/7/8/7815e96f94b6f56c0ad4ad10dcc1b9d7204c41ed.png) ---
**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:** [November 22, 2022, 1:18pm UTC](https://forum.inductiveautomation.com/t/bad-nodeidunknown-the-node-id-refers-to-a-node-that-does-not-exist-in-the-server-address-space/62309/14 "2022-11-22T13:18:39Z")
The tag name doesn't matter, only the OPC Item Path. If you look close at your screen shot, you can see a difference in the device names.. underscore versus hyphen. ---
**Author:** ![kavya\_shree](https://avatars.discourse-cdn.com/v4/letter/k/b4bc9f/32.png) [@kavya\_shree](https://forum.inductiveautomation.com/u/kavya_shree)\ **Post date:** [June 15, 2023, 6:57am UTC](https://forum.inductiveautomation.com/t/bad-nodeidunknown-the-node-id-refers-to-a-node-that-does-not-exist-in-the-server-address-space/62309/16 "2023-06-15T06:57:27Z")
I got the connection with Kepware and Ignition. yesterday I got connection, I was able to read tags in Ignition, but today after I reinitialize I am getting error in Tag Browser. ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/a/0/a0029a52103aa8a1069c2ce3fa378cd3eb2aa99e.png) ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/a/6/a67b17a2dfb39dcab82cd77ea546d3af8889e11d.png) ---
**Author:** ![kavya\_shree](https://avatars.discourse-cdn.com/v4/letter/k/b4bc9f/32.png) [@kavya\_shree](https://forum.inductiveautomation.com/u/kavya_shree)\ **Post date:** [June 15, 2023, 10:34am UTC](https://forum.inductiveautomation.com/t/bad-nodeidunknown-the-node-id-refers-to-a-node-that-does-not-exist-in-the-server-address-space/62309/17 "2023-06-15T10:34:23Z")
Can anyone please give the solution for above error ---
**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:** [June 15, 2023, 12:10pm UTC](https://forum.inductiveautomation.com/t/bad-nodeidunknown-the-node-id-refers-to-a-node-that-does-not-exist-in-the-server-address-space/62309/18 "2023-06-15T12:10:08Z")
You haven't provide enough information. Get the **Details** , then copy, then paste here using the "Preformatted text" styling (button \ in the comment editor). But "NodeIdUnknown" is just something handed off from the OPC server. (Are you using Kepware's trial mode?) ---
**Author:** ![kavya\_shree](https://avatars.discourse-cdn.com/v4/letter/k/b4bc9f/32.png) [@kavya\_shree](https://forum.inductiveautomation.com/u/kavya_shree)\ **Post date:** [June 16, 2023, 3:50am UTC](https://forum.inductiveautomation.com/t/bad-nodeidunknown-the-node-id-refers-to-a-node-that-does-not-exist-in-the-server-address-space/62309/19 "2023-06-16T03:50:17Z")
![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/5/7/5744af9683111e3b3b7c31ca8b6005492013e6c6.png) ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/3/3/336adc4f0ef17415c1de41e6fb610e3c2543a22b.png) Yes I am using Trial version. ---
**Author:** ![kavya\_shree](https://avatars.discourse-cdn.com/v4/letter/k/b4bc9f/32.png) [@kavya\_shree](https://forum.inductiveautomation.com/u/kavya_shree)\ **Post date:** [June 16, 2023, 3:57am UTC](https://forum.inductiveautomation.com/t/bad-nodeidunknown-the-node-id-refers-to-a-node-that-does-not-exist-in-the-server-address-space/62309/20 "2023-06-16T03:57:00Z")
Yes I am using Trial version. can you please tell what are restrictions when we are using trial version. can you please explain what is this notification. ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/5/a/5a7e62d6324193fa877d37136b519d7d30c4af77.png) ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/a/3/a3851692c0a446beb5c9f9a4f9ba443fb05f61ea.png) ```auto Error ThingWorx Native Interface Connection to ThingWorx failed. | Platform = localhost:443/Thingworx/WS, error = could not initialize a secure socket connection. ``` ---
**Author:** ![JordanCClark](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/jordancclark/32/83362_2.png) [@JordanCClark](https://forum.inductiveautomation.com/u/JordanCClark)\ **Post date:** [June 16, 2023, 10:29am UTC](https://forum.inductiveautomation.com/t/bad-nodeidunknown-the-node-id-refers-to-a-node-that-does-not-exist-in-the-server-address-space/62309/21 "2023-06-16T10:29:31Z")
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