# Unknown OPC tags in SQL Browser **URL:** \ **Category:** 3rd Party Modules\ **Created:** [November 16, 2011, 8:29pm UTC](https://forum.inductiveautomation.com/t/unknown-opc-tags-in-sql-browser/3614 "2011-11-16T20:29:48Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![jlr573](https://avatars.discourse-cdn.com/v4/letter/j/c6cbf5/32.png) [@jlr573](https://forum.inductiveautomation.com/u/jlr573)\ **Post date:** [November 16, 2011, 8:29pm UTC](https://forum.inductiveautomation.com/t/unknown-opc-tags-in-sql-browser/3614/1 "2011-11-16T20:29:48Z")
When I move a tag from the OPC browser to the SQL Browser the value will go from null to 0 and then the tag has a green question mark. Under the tag diagnostic the message says unknown and the quality is unknown. How do i fix this? ---
**Author:** ![Pete.Low](https://avatars.discourse-cdn.com/v4/letter/p/f05b48/32.png) [@Pete.Low](https://forum.inductiveautomation.com/u/Pete.Low)\ **Post date:** [November 16, 2011, 9:43pm UTC](https://forum.inductiveautomation.com/t/unknown-opc-tags-in-sql-browser/3614/2 "2011-11-16T21:43:36Z")
It sounds like the production model is not running. In the designer go to your production line and look at the top level “Production” item. It should have a green arrow indicating it is running. Also the State label in the status panel at the bottom right should show running. If it is not running you can make sure that the configuration is set to Enabled. Also confirm that it can connect to and has rights to a valid datasource. Regards. ---
**Author:** ![jlr573](https://avatars.discourse-cdn.com/v4/letter/j/c6cbf5/32.png) [@jlr573](https://forum.inductiveautomation.com/u/jlr573)\ **Post date:** [November 21, 2011, 2:36pm UTC](https://forum.inductiveautomation.com/t/unknown-opc-tags-in-sql-browser/3614/3 "2011-11-21T14:36:35Z")
I’ve checked those things and I do have a green arrow and the state shows running. There is an alert that says “Maximum number of licensed lines or cells exceeded” but my license has five cells. Could this be the issue? ---
**Author:** ![Pete.Low](https://avatars.discourse-cdn.com/v4/letter/p/f05b48/32.png) [@Pete.Low](https://forum.inductiveautomation.com/u/Pete.Low)\ **Post date:** [November 21, 2011, 4:02pm UTC](https://forum.inductiveautomation.com/t/unknown-opc-tags-in-sql-browser/3614/4 "2011-11-21T16:02:07Z")
Do you still have the demo project loaded? If it’s production model is running (even though you are not viewing that project) it will count against the license. Open that project and disable it’s production model. Also, what version of the ignition and the MES modules are you running? ---
**Author:** ![jlr573](https://avatars.discourse-cdn.com/v4/letter/j/c6cbf5/32.png) [@jlr573](https://forum.inductiveautomation.com/u/jlr573)\ **Post date:** [November 21, 2011, 4:14pm UTC](https://forum.inductiveautomation.com/t/unknown-opc-tags-in-sql-browser/3614/5 "2011-11-21T16:14:06Z")
Ignition 7.3.1 (b496) MES 1.3.0 (b111003) I’ve gotten to start running but it seems that when i make a change to an production item is when this problem occurs. I’ve gotten it to start working by closing the client, designer and gateway. then reopen all. But that doesn’t always work. It’s currently not running. ---
**Author:** ![Pete.Low](https://avatars.discourse-cdn.com/v4/letter/p/f05b48/32.png) [@Pete.Low](https://forum.inductiveautomation.com/u/Pete.Low)\ **Post date:** [November 21, 2011, 5:25pm UTC](https://forum.inductiveautomation.com/t/unknown-opc-tags-in-sql-browser/3614/6 "2011-11-21T17:25:47Z")
Please send your exported console logs and I could take a look at that. ---
**Author:** ![jlr573](https://avatars.discourse-cdn.com/v4/letter/j/c6cbf5/32.png) [@jlr573](https://forum.inductiveautomation.com/u/jlr573)\ **Post date:** [November 21, 2011, 5:41pm UTC](https://forum.inductiveautomation.com/t/unknown-opc-tags-in-sql-browser/3614/7 "2011-11-21T17:41:42Z")
After I disabled the Demo project my project still had unknown tags, so I deleted the demo same issue. I created a new project, same issue. I’m at a stand still. File attached [logs.bin.gz](https://us1.discourse-cdn.com/inductiveautomation/original/1X/3d2fb212c050a851ba426f516e2d3f8c366ef709.gz) (385 KB)