# Doc-value field \[@timestamp\] is not using a format

**URL:** <https://discuss.elastic.co/t/doc-value-field-timestamp-is-not-using-a-format/146546>\
**Category:** Elasticsearch\
**Created:** [August 29, 2018, 2:47pm UTC](https://discuss.elastic.co/t/doc-value-field-timestamp-is-not-using-a-format/146546 "2018-08-29T14:47:08Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![randude](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/randude/32/34911_2.png) [@randude](https://discuss.elastic.co/u/randude)\
**Post date:** [August 29, 2018, 2:47pm UTC](https://discuss.elastic.co/t/doc-value-field-timestamp-is-not-using-a-format/146546/1 "2018-08-29T14:47:09Z")

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Hi,  
I'm getting this WARN after the upgrade to 6.4.0.  
Can someone explain this? how do I fix this?  
Thanks.

I'm auing the filter date on my logs

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**Author:** ![mseto](https://avatars.discourse-cdn.com/v4/letter/m/2acd7d/32.png) [@mseto](https://discuss.elastic.co/u/mseto)\
**Post date:** [August 30, 2018, 5:55pm UTC](https://discuss.elastic.co/t/doc-value-field-timestamp-is-not-using-a-format/146546/2 "2018-08-30T17:55:43Z")

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Anyone?

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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 27, 2018, 5:55pm UTC](https://discuss.elastic.co/t/doc-value-field-timestamp-is-not-using-a-format/146546/3 "2018-09-27T17:55:48Z")

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