# Alert on changes

**URL:** <https://discuss.elastic.co/t/alert-on-changes/280790>\
**Category:** Kibana\
**Created:** [August 9, 2021, 10:26am UTC](https://discuss.elastic.co/t/alert-on-changes/280790 "2021-08-09T10:26:58Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![ksremo](https://avatars.discourse-cdn.com/v4/letter/k/5fc32e/32.png) [@ksremo](https://discuss.elastic.co/u/ksremo)\
**Post date:** [August 9, 2021, 10:26am UTC](https://discuss.elastic.co/t/alert-on-changes/280790/1 "2021-08-09T10:26:58Z")

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Hello,  
i have 1 index which is filled once a day with some values.  
I have to create an alert only if a value is added which was not present in the day before.

how to archive this? any ideas?  
thanks

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**Author:** ![chrisronline](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/chrisronline/32/28230_2.png) [@chrisronline](https://discuss.elastic.co/u/chrisronline)\
**Post date:** [August 25, 2021, 1:56pm UTC](https://discuss.elastic.co/t/alert-on-changes/280790/2 "2021-08-25T13:56:35Z")

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Hi @ksremo ,

Can you provide some more details about your data? Is the "value" an actual value to an assigned key? Or a key itself? Maybe list an example of a structure on day 1 and one on day 2 that should fire this alert.

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [September 22, 2021, 1:56pm UTC](https://discuss.elastic.co/t/alert-on-changes/280790/3 "2021-09-22T13:56:37Z")

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