# Problem with output elasticsearch data duplicate on index

**URL:** <https://discuss.elastic.co/t/problem-with-output-elasticsearch-data-duplicate-on-index/101981>\
**Category:** Logstash\
**Created:** [September 27, 2017, 1:02pm UTC](https://discuss.elastic.co/t/problem-with-output-elasticsearch-data-duplicate-on-index/101981 "2017-09-27T13:02:59Z")\
**Posts on this page:** 1\
**Showing post:** 4

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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:** [September 27, 2017, 1:49pm UTC](https://discuss.elastic.co/t/problem-with-output-elasticsearch-data-duplicate-on-index/101981/4 "2017-09-27T13:49:54Z")

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You can use the `add_field` parameter in the input to create a `data_type` field and then your conditional in the output section.

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_[View the full topic](https://discuss.elastic.co/t/problem-with-output-elasticsearch-data-duplicate-on-index/101981)._