# Doc-value related warnings filling the log

**URL:** <https://discuss.elastic.co/t/doc-value-related-warnings-filling-the-log/146760>\
**Category:** Elasticsearch\
**Created:** [August 30, 2018, 5:56pm UTC](https://discuss.elastic.co/t/doc-value-related-warnings-filling-the-log/146760 "2018-08-30T17:56:21Z")\
**Posts on this page:** 3\
**Page:** 1

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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, 5:56pm UTC](https://discuss.elastic.co/t/doc-value-related-warnings-filling-the-log/146760/1 "2018-08-30T17:56:21Z")

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I am seeing the following warning fill the log -

Doc-value field [@timestamp] is not using a format. The output will change in 7.0 when doc value fields get formatted based on mappings by default

I am wondering which aspect of the configuration I need to modify to resolve this.

Thank youj!

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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, 6:03pm UTC](https://discuss.elastic.co/t/doc-value-related-warnings-filling-the-log/146760/2 "2018-08-30T18:03:21Z")

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I went into 'Index Settings' for Kibana, and switched the format of @timestamp from '-default-' to 'Date', saved and then refreshed the fields.

Hoping that was all I needed to do.

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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, 6:03pm UTC](https://discuss.elastic.co/t/doc-value-related-warnings-filling-the-log/146760/3 "2018-09-27T18:03:30Z")

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