# Updating the Mapping of an existing Index
**URL:** https://discuss.elastic.co/t/updating-the-mapping-of-an-existing-index/196275
**Category:** Kibana
**Created:** [August 22, 2019, 8:47am UTC](https://discuss.elastic.co/t/updating-the-mapping-of-an-existing-index/196275 "2019-08-22T08:47:01Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@Ramya\_Tanikanti](https://discuss.elastic.co/u/Ramya_Tanikanti)
#### Post date: [August 22, 2019, 8:47am UTC](https://discuss.elastic.co/t/updating-the-mapping-of-an-existing-index/196275/1 "2019-08-22T08:47:01Z")
I have uploaded a CSV file via logstash into elasticsearch. I did not set the date field in the Logstash config file. Is there a way to change the string-type to date-type in Kibana? Kindly help.
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### Author:  [@wangqinghuan](https://discuss.elastic.co/u/wangqinghuan)
#### Post date: [August 22, 2019, 9:45am UTC](https://discuss.elastic.co/t/updating-the-mapping-of-an-existing-index/196275/2 "2019-08-22T09:45:45Z")
You cannot update the mapping of existing fields. Delete existing indices and upload file into elasticsearch again.
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### Author:  [@Ramya\_Tanikanti](https://discuss.elastic.co/u/Ramya_Tanikanti)
#### Post date: [August 22, 2019, 10:55am UTC](https://discuss.elastic.co/t/updating-the-mapping-of-an-existing-index/196275/3 "2019-08-22T10:55:07Z")
Thank You : )
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [September 19, 2019, 10:55am UTC](https://discuss.elastic.co/t/updating-the-mapping-of-an-existing-index/196275/4 "2019-09-19T10:55:08Z")
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