# Not a valid tag name **URL:** \ **Category:** Ignition\ **Created:** [April 15, 2010, 3:28pm UTC](https://forum.inductiveautomation.com/t/not-a-valid-tag-name/1758 "2010-04-15T15:28:59Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![Robert](https://avatars.discourse-cdn.com/v4/letter/r/e95f7d/32.png) [@Robert](https://forum.inductiveautomation.com/u/Robert)\ **Post date:** [April 15, 2010, 3:28pm UTC](https://forum.inductiveautomation.com/t/not-a-valid-tag-name/1758/1 "2010-04-15T15:28:59Z")
I am creating a bunch of SQL tags based on the clients device names. It appears that ‘28L67’ is invalid. I’m guessing that it is because it’s starting with a #. 1. What are the tag naming rules? Can they be put in the user manual please? 2. Can you change it so that ‘28L67’ is an allowed tag name? Please? ![:prayer:](https://us1.discourse-cdn.com/inductiveautomation/original/1X/e5a7e3b63facc151ea73e3b45db7bdb3d4bdc316.gif ":prayer:") ---
**Author:** ![AlThePal](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/althepal/32/3603_2.png) [@AlThePal](https://forum.inductiveautomation.com/u/AlThePal)\ **Post date:** [April 16, 2010, 7:58am UTC](https://forum.inductiveautomation.com/t/not-a-valid-tag-name/1758/2 "2010-04-16T07:58:18Z")
I’ve ended up prefacing numeric tags with an underscore. ---
**Author:** ![Robert](https://avatars.discourse-cdn.com/v4/letter/r/e95f7d/32.png) [@Robert](https://forum.inductiveautomation.com/u/Robert)\ **Post date:** [April 16, 2010, 3:20pm UTC](https://forum.inductiveautomation.com/t/not-a-valid-tag-name/1758/3 "2010-04-16T15:20:56Z")
For the moment I’ve done something similar. However, This tags are been generated by a 3rd party application and are been accessed/updated by it as well. Having to filter all tags access means a bunch of work that I’d rather not have to do. Why is the limitation there? If it’s an OPC standard, I can see it for OPC tags, but I’m not using OPC. ---
**Author:** ![Carl.Gould](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/carl.gould/32/7262_2.png) [@Carl.Gould](https://forum.inductiveautomation.com/u/Carl.Gould)\ **Post date:** [April 16, 2010, 3:45pm UTC](https://forum.inductiveautomation.com/t/not-a-valid-tag-name/1758/4 "2010-04-16T15:45:38Z")
Right now tag names are restricted to starting with a character or an underscore. It was coded this way out of habit, I suppose, since we are used to this sort of naming restriction for things like database columns, programmatic variable names, etc. I don’t think there should be any problem allowing digits as the starting character of tag name. ---
**Author:** ![Robert](https://avatars.discourse-cdn.com/v4/letter/r/e95f7d/32.png) [@Robert](https://forum.inductiveautomation.com/u/Robert)\ **Post date:** [April 16, 2010, 5:26pm UTC](https://forum.inductiveautomation.com/t/not-a-valid-tag-name/1758/5 "2010-04-16T17:26:30Z")
So I can look for it in this weeks release? 😈 ---
**Author:** ![Carl.Gould](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/carl.gould/32/7262_2.png) [@Carl.Gould](https://forum.inductiveautomation.com/u/Carl.Gould)\ **Post date:** [April 16, 2010, 8:44pm UTC](https://forum.inductiveautomation.com/t/not-a-valid-tag-name/1758/6 "2010-04-16T20:44:39Z")
Yes you can! It is done. ---
**Author:** ![Robert](https://avatars.discourse-cdn.com/v4/letter/r/e95f7d/32.png) [@Robert](https://forum.inductiveautomation.com/u/Robert)\ **Post date:** [April 16, 2010, 11:08pm UTC](https://forum.inductiveautomation.com/t/not-a-valid-tag-name/1758/7 "2010-04-16T23:08:11Z")
you guys are awesome ![:prayer:](https://us1.discourse-cdn.com/inductiveautomation/original/1X/e5a7e3b63facc151ea73e3b45db7bdb3d4bdc316.gif ":prayer:") ![:prayer:](https://us1.discourse-cdn.com/inductiveautomation/original/1X/e5a7e3b63facc151ea73e3b45db7bdb3d4bdc316.gif ":prayer:") ![:prayer:](https://us1.discourse-cdn.com/inductiveautomation/original/1X/e5a7e3b63facc151ea73e3b45db7bdb3d4bdc316.gif ":prayer:") ---
**Author:** ![Robert](https://avatars.discourse-cdn.com/v4/letter/r/e95f7d/32.png) [@Robert](https://forum.inductiveautomation.com/u/Robert)\ **Post date:** [May 3, 2010, 4:22pm UTC](https://forum.inductiveautomation.com/t/not-a-valid-tag-name/1758/8 "2010-05-03T16:22:49Z")
_sigh_ More things you can not put in a SQL TAG name: é + . ( ) / Things you can put in a SQL Tag name: 1234567890\_-abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ Can the naming restrictions please be added to the documentation? ![:prayer:](https://us1.discourse-cdn.com/inductiveautomation/original/1X/e5a7e3b63facc151ea73e3b45db7bdb3d4bdc316.gif ":prayer:") ---
**Author:** ![Robert.McKenzie](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/robert.mckenzie/32/4134_2.png) [@Robert.McKenzie](https://forum.inductiveautomation.com/u/Robert.McKenzie)\ **Post date:** [May 3, 2010, 9:34pm UTC](https://forum.inductiveautomation.com/t/not-a-valid-tag-name/1758/9 "2010-05-03T21:34:17Z")
This info will be in the help manual in the next release. ---
**Author:** ![Robert](https://avatars.discourse-cdn.com/v4/letter/r/e95f7d/32.png) [@Robert](https://forum.inductiveautomation.com/u/Robert)\ **Post date:** [May 4, 2010, 4:23pm UTC](https://forum.inductiveautomation.com/t/not-a-valid-tag-name/1758/10 "2010-05-04T16:23:41Z")
Thank you, thank you, thank you ---
**Author:** ![tyrel.parker](https://avatars.discourse-cdn.com/v4/letter/t/47e85d/32.png) [@tyrel.parker](https://forum.inductiveautomation.com/u/tyrel.parker)\ **Post date:** [August 26, 2019, 10:01pm UTC](https://forum.inductiveautomation.com/t/not-a-valid-tag-name/1758/11 "2019-08-26T22:01:55Z")
Where are the naming rules in the manual? I cannot find them. If you search for naming in the documentation it simply pulls up Named Queries and such.