# Duplicate document in Elasticsearch5.4

**URL:** <https://discuss.elastic.co/t/duplicate-document-in-elasticsearch5-4/108950>\
**Category:** Elasticsearch\
**Created:** [November 24, 2017, 1:09am UTC](https://discuss.elastic.co/t/duplicate-document-in-elasticsearch5-4/108950 "2017-11-24T01:09:17Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Albert\_zheng](https://avatars.discourse-cdn.com/v4/letter/a/3ec8ea/32.png) [@Albert\_zheng](https://discuss.elastic.co/u/Albert_zheng)\
**Post date:** [November 24, 2017, 1:09am UTC](https://discuss.elastic.co/t/duplicate-document-in-elasticsearch5-4/108950/1 "2017-11-24T01:09:17Z")

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I try to use fingerprint to create document ID for overwriting duplicate document. but i found some document still uses  
auto\_id in \_id field, does anyone has same issue in ES 5.4?

![image](https://us1.discourse-cdn.com/elastic/original/3X/0/c/0cd62ef9f5bbb80108bd06356edf325c70b5aa12.png)  
 ![image](https://us1.discourse-cdn.com/elastic/original/3X/a/0/a002921f566bff220397b51faa0772972efa762f.png)

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**Author:** ![Christian\_Dahlqvist](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/christian_dahlqvist/32/4617_2.png) [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)\
**Post date:** [November 24, 2017, 6:05am UTC](https://discuss.elastic.co/t/duplicate-document-in-elasticsearch5-4/108950/2 "2017-11-24T06:05:54Z")

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How are you ingesting the data?

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<div class="post-metadata">

**Author:** ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)\
**Post date:** [November 24, 2017, 6:16am UTC](https://discuss.elastic.co/t/duplicate-document-in-elasticsearch5-4/108950/3 "2017-11-24T06:16:03Z")

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Any chance you have a bug in your code which generates a null value?

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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:** [December 22, 2017, 6:16am UTC](https://discuss.elastic.co/t/duplicate-document-in-elasticsearch5-4/108950/4 "2017-12-22T06:16:18Z")

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