# Strange behaviour Index Pattern **URL:** \ **Category:** Kibana\ **Created:** [August 5, 2021, 12:50pm UTC](https://discuss.elastic.co/t/strange-behaviour-index-pattern/280532 "2021-08-05T12:50:00Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Jose\_Manuel\_Tirado](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/jose_manuel_tirado/32/84882_2.png) [@Jose\_Manuel\_Tirado](https://discuss.elastic.co/u/Jose_Manuel_Tirado)\ **Post date:** [August 5, 2021, 12:50pm UTC](https://discuss.elastic.co/t/strange-behaviour-index-pattern/280532/1 "2021-08-05T12:50:00Z")
HI! when I access index pattern I see these strange fields and I can't do anything with them ![Captura de pantalla 2021-08-05 144511](https://us1.discourse-cdn.com/elastic/original/3X/1/2/12ac85d1beb8e1b77f79d6158091b73c8b540aef.png) What are they and how can I eliminate them? Are they occupying my memory? Thank you ---
**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\ **Post date:** [August 9, 2021, 5:03am UTC](https://discuss.elastic.co/t/strange-behaviour-index-pattern/280532/2 "2021-08-09T05:03:42Z")
It looks like incorrectly encoded data from something. Can you find a sample document in Discover and track down the source from there? The only way to get rid of this would be to delete the data, or reindex it and fix the problem at the same time. ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [September 6, 2021, 5:03am UTC](https://discuss.elastic.co/t/strange-behaviour-index-pattern/280532/3 "2021-09-06T05:03:59Z")
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