# Failed to parse date field in ELK stack 7.0

**URL:** <https://discuss.elastic.co/t/failed-to-parse-date-field-in-elk-stack-7-0/232984>\
**Category:** Logstash\
**Created:** [May 17, 2020, 10:12am UTC](https://discuss.elastic.co/t/failed-to-parse-date-field-in-elk-stack-7-0/232984 "2020-05-17T10:12:23Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![janmichae.reyes4](https://avatars.discourse-cdn.com/v4/letter/j/ce73a5/32.png) [@janmichae.reyes4](https://discuss.elastic.co/u/janmichae.reyes4)\
**Post date:** [May 17, 2020, 10:12am UTC](https://discuss.elastic.co/t/failed-to-parse-date-field-in-elk-stack-7-0/232984/1 "2020-05-17T10:12:23Z")

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hi,

Seeking your help on the issue that i've encountered. see logstash logs

[2020-05-17T18:08:04,561][WARN][logstash.outputs.elasticsearch][main][7a2e4f1adfc06df81621c72c479da896bcfd3869a4bb01f7a4d4115bed9c9c96] Could not index event to Elasticsearch. {:status=\>400, :action=\>["index", {:\_id=\>nil, :\_index=\>"filebeat-2020.05.17", :routing=\>nil, :\_type=\>"\_doc"}, #LogStash::Event:0x7a5ddd11], :response=\>{"index"=\>{"\_index"=\>"filebeat-2020.05.17", "\_type"=\>"\_doc", "\_id"=\>"QToaInIBZskL-m562WvP", "status"=\>400, "error"=\>{"type"=\>"mapper\_parsing\_exception", "reason"=\>"failed to parse field [@timestamp] of type [date] in document with id 'QToaInIBZskL-m562WvP'. Preview of field's value: '2020-05-17T10:08:09.493Z'", "caused\_by"=\>{"type"=\>"illegal\_argument\_exception", "reason"=\>"failed to parse date field [2020-05-17T10:08:09.493Z] with format [epoch\_millis]", "caused\_by"=\>{"type"=\>"date\_time\_parse\_exception", "reason"=\>"Failed to parse with all enclosed parsers"}}}}}}

Thank you

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<div class="post-metadata">

**Author:** ![Badger](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/badger/32/25190_2.png) [@Badger](https://discuss.elastic.co/u/Badger)\
**Post date:** [May 17, 2020, 3:09pm UTC](https://discuss.elastic.co/t/failed-to-parse-date-field-in-elk-stack-7-0/232984/2 "2020-05-17T15:09:03Z")

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You have an index template that says the [@timestamp] field has to be in the epoch\_millis format, but you are sending it an ISO8601 format. I suggest you change your index template.

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**Author:** ![janmichae.reyes4](https://avatars.discourse-cdn.com/v4/letter/j/ce73a5/32.png) [@janmichae.reyes4](https://discuss.elastic.co/u/janmichae.reyes4)\
**Post date:** [May 18, 2020, 6:45am UTC](https://discuss.elastic.co/t/failed-to-parse-date-field-in-elk-stack-7-0/232984/3 "2020-05-18T06:45:26Z")

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Thank you for the response. Will have this try.

Thank you. 🙂

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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:** [June 15, 2020, 6:45am UTC](https://discuss.elastic.co/t/failed-to-parse-date-field-in-elk-stack-7-0/232984/4 "2020-06-15T06:45:45Z")

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