# changeNotification Error on Logs **URL:** \ **Category:** Ignition\ **Tags:** changelog\ **Created:** [July 18, 2020, 6:49pm UTC](https://forum.inductiveautomation.com/t/changenotification-error-on-logs/36847 "2020-07-18T18:49:03Z")\ **Posts on this page:** 10\ **Page:** 1
**Author:** ![anthony.urquizo](https://avatars.discourse-cdn.com/v4/letter/a/e5b9ba/32.png) [@anthony.urquizo](https://forum.inductiveautomation.com/u/anthony.urquizo)\ **Post date:** [July 18, 2020, 6:49pm UTC](https://forum.inductiveautomation.com/t/changenotification-error-on-logs/36847/1 "2020-07-18T18:49:03Z")
Hi! We are receiving a bunch of logs with changeNotification. ![Error](https://us1.discourse-cdn.com/inductiveautomation/original/3X/a/c/ac1f68abde82d17857ae6d181293a14c03d9a93b.png) We don’t see any information about this Log on the user manual. The message seems to be around a change on the Tag structure which certainly hasn’t been any change. Current Version: 8.0.14 I can provide more information regarding this issue if necessary. Thanks! ---
**Author:** ![foliveira](https://avatars.discourse-cdn.com/v4/letter/f/58956e/32.png) [@foliveira](https://forum.inductiveautomation.com/u/foliveira)\ **Post date:** [December 7, 2020, 1:29am UTC](https://forum.inductiveautomation.com/t/changenotification-error-on-logs/36847/2 "2020-12-07T01:29:11Z")
Did you manage to resolve this issue? I’m also receiving this error and can’t identify where the problem is. ---
**Author:** ![anthony.urquizo](https://avatars.discourse-cdn.com/v4/letter/a/e5b9ba/32.png) [@anthony.urquizo](https://forum.inductiveautomation.com/u/anthony.urquizo)\ **Post date:** [January 19, 2021, 9:05pm UTC](https://forum.inductiveautomation.com/t/changenotification-error-on-logs/36847/3 "2021-01-19T21:05:22Z")
Hi @foliveira, Sorry for the late reply. We have been able to reduce the number of errors in the log by eliminating UDTs that we were not using in any project. However we still have 5 to 8 errors in each log update. Was it possible for you to see where yours come from? ---
**Author:** ![kcollins](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kcollins/32/19646_2.png) [@kcollins](https://forum.inductiveautomation.com/u/kcollins)\ **Post date:** [January 19, 2021, 9:18pm UTC](https://forum.inductiveautomation.com/t/changenotification-error-on-logs/36847/4 "2021-01-19T21:18:01Z")
Can you enable DEBUG for `tags.execution.batch`? It might help zero in on where this NPE is coming from. ---
**Author:** ![anthony.urquizo](https://avatars.discourse-cdn.com/v4/letter/a/e5b9ba/32.png) [@anthony.urquizo](https://forum.inductiveautomation.com/u/anthony.urquizo)\ **Post date:** [January 19, 2021, 9:54pm UTC](https://forum.inductiveautomation.com/t/changenotification-error-on-logs/36847/5 "2021-01-19T21:54:32Z")
> [@kcollins](#): > > It might help zero in on where this NPE is coming from. Thanks @kcollins. Where can I enable it? ---
**Author:** ![kcollins](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kcollins/32/19646_2.png) [@kcollins](https://forum.inductiveautomation.com/u/kcollins)\ **Post date:** [January 19, 2021, 9:59pm UTC](https://forum.inductiveautomation.com/t/changenotification-error-on-logs/36847/6 "2021-01-19T21:59:22Z")
You can enable it in the _Logs_ section of the Gateway _Status_ webpage: ![Turning on Log Flags](https://us1.discourse-cdn.com/inductiveautomation/original/3X/f/a/fad54af9abe7e166b5fbb23d63a1afdaa1b648cd.gif) You can then go back to that and reset the levels once you’ve collected what you need (so that way you don’t fill up your logs)… ---
**Author:** ![anthony.urquizo](https://avatars.discourse-cdn.com/v4/letter/a/e5b9ba/32.png) [@anthony.urquizo](https://forum.inductiveautomation.com/u/anthony.urquizo)\ **Post date:** [January 19, 2021, 10:16pm UTC](https://forum.inductiveautomation.com/t/changenotification-error-on-logs/36847/7 "2021-01-19T22:16:21Z")
Thank you. It does not provide additional information to the error. ---
**Author:** ![kcollins](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kcollins/32/19646_2.png) [@kcollins](https://forum.inductiveautomation.com/u/kcollins)\ **Post date:** [January 19, 2021, 10:30pm UTC](https://forum.inductiveautomation.com/t/changenotification-error-on-logs/36847/8 "2021-01-19T22:30:14Z")
How about `tags.execution.batchoperations` (DEBUG) too? ---
**Author:** ![foliveira](https://avatars.discourse-cdn.com/v4/letter/f/58956e/32.png) [@foliveira](https://forum.inductiveautomation.com/u/foliveira)\ **Post date:** [January 19, 2021, 11:20pm UTC](https://forum.inductiveautomation.com/t/changenotification-error-on-logs/36847/9 "2021-01-19T23:20:19Z")
Hi, In my case I didn’t notice I had passed the tag limit configured in TIA Portal for the OPC UA server of my S7-1500. This is where my problem was. As soon as I changed the limit from 1000 to 5000 (10000 is the limit per subscription), all tags configured in the project immediately started to refresh. Just a newcomer error. This is the first time I’m using the integrated OPC UA of the S7-1500. Nevertheless, based on Siemens documentation, I think I’m abusing the S7-1511 capacity… ---
**Author:** ![anthony.urquizo](https://avatars.discourse-cdn.com/v4/letter/a/e5b9ba/32.png) [@anthony.urquizo](https://forum.inductiveautomation.com/u/anthony.urquizo)\ **Post date:** [January 20, 2021, 1:51am UTC](https://forum.inductiveautomation.com/t/changenotification-error-on-logs/36847/10 "2021-01-20T01:51:38Z")
Here I have a screenshot of the logger. Is there any way to know to which source the structure change belongs or to which tags these notifications belong? ![Captura de Pantalla 2021-01-19 a la(s) 20.46.53](https://us1.discourse-cdn.com/inductiveautomation/original/3X/4/b/4ba61807e228171aa5ce8f9685be16b016549637.png)